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''Rengoku: The Tower of Purgatory'' is an ActionRPG for UsefulNotes/PlayStationPortable by Creator/{{Neverland}} and Creator/HudsonSoft, published by Creator/{{Konami}} in April 26, 2005. Features illustrations by Jun Suemi.
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''Rengoku: The Tower of Purgatory'' is an ActionRPG for UsefulNotes/PlayStationPortable Platform/PlayStationPortable by Creator/{{Neverland}} and Creator/HudsonSoft, published by Creator/{{Konami}} in April 26, 2005. Features illustrations by Jun Suemi.
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In TheFuture, humanity, trying to avoid casualties in wars, has started to rely on {{Robot Soldier}}s. Through the LensmanArmsRace, the ultimate androids have emerged, A.D.A.M. (Autonomous Duelling Armed Machine), capable of [[ShapeshifterWeapon morphing their body into weapons]] with Elixir Skin, finally bringing the war to the end.
The victors, Deucalion Group, not knowing what else to do with with an army of highly intelligent and purposeless war androids, have decided to reprogram them for an endless {{Gladiator Game|s}}. Not wanting to simply destroy them, Deucalion have created for them Purgatory, the first of the many Rengoku Towers, and sealed it away, while the repetitive ascension is being broadcasted for the public entertainment.
Until one A.D.A.M. gladiator Gram GrewBeyondTheirProgramming and decided to escape.
The victors, Deucalion Group, not knowing what else to do with with an army of highly intelligent and purposeless war androids, have decided to reprogram them for an endless {{Gladiator Game|s}}. Not wanting to simply destroy them, Deucalion have created for them Purgatory, the first of the many Rengoku Towers, and sealed it away, while the repetitive ascension is being broadcasted for the public entertainment.
Until one A.D.A.M. gladiator Gram GrewBeyondTheirProgramming and decided to escape.
to:
In TheFuture, humanity, trying to avoid casualties in wars, has started to rely on {{Robot Soldier}}s. Through the LensmanArmsRace, the ultimate androids have emerged, A.D.A.M. (Autonomous Duelling Armed Machine), capable of [[ShapeshifterWeapon morphing their body into weapons]] with Elixir Skin, finally bringing the war to the an end.
The victors, Deucalion Group, not knowing what else to dowith with an army of highly intelligent and purposeless war androids, have decided to reprogram them for an endless {{Gladiator Game|s}}. Not wanting to simply destroy them, Deucalion have created for them Purgatory, the first of the many Rengoku Towers, and sealed it away, while the repetitive ascension is being broadcasted for the public entertainment.
Until one A.D.A.M.gladiator Gram gladiator, Gram, GrewBeyondTheirProgramming and decided to escape.
The victors, Deucalion Group, not knowing what else to do
Until one A.D.A.M.
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!!''Rengoku'' provides the examples of:
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!!''Rengoku'' provides the examples of:
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* AccidentalHero: [[spoiler:Virgil has created [=ADAMs=] based on Captain Gram memories. Beatrice, who was in love with Gram, has tampered with the uploading to remove his personality so there wouldn't be thousands of Grams and left only combat data. It turns out Virgil had a secondary plan to turn [=ADAMs=] into the new master race and needed them to develop consciousness. So while he was able to end the Machine War, Beatrice unwittingly made it so his he was unable to start the new one against mankind.]]
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* AccidentalHero: [[spoiler:Virgil has created [=ADAMs=] based on Captain Gram Gram's memories. Beatrice, who was in love with Gram, has tampered with the uploading to remove his personality so there wouldn't be thousands of Grams and left only combat data. It turns out Virgil had a secondary plan to turn [=ADAMs=] into the new master race and needed them to develop consciousness. So while he was able to end the Machine War, Beatrice unwittingly made it so his he was unable to start the new one against mankind.]]
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** [[spoiler:Purgatory has no spectators, they've went extinct centuries ago. So all [=ADAMs=] are fighting each other simply becuase they don't or can't question the program]].
** [[spoiler:Virgil wanted his [=ADAMs=] to replace humanity and has waited for them to grow self-conscious. Humans eventually went extinct for unknown reasons regardless, while the ADAM units got forever stuck in the tower, failing to grow. The only ones with own ego turned out to [[WasOnceAMan originally be humans]] with amnesia.]]
** [[spoiler:Virgil wanted his [=ADAMs=] to replace humanity and has waited for them to grow self-conscious. Humans eventually went extinct for unknown reasons regardless, while the ADAM units got forever stuck in the tower, failing to grow. The only ones with own ego turned out to [[WasOnceAMan originally be humans]] with amnesia.]]
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** [[spoiler:Purgatory has no spectators, they've went extinct centuries ago. So all [=ADAMs=] are fighting each other simply becuase they don't or can't question the program]].
program.]]
** [[spoiler:Virgil wanted his [=ADAMs=] to replace humanity and has waited for them to grow self-conscious. Humans eventually went extinct for unknown reasons regardless, while the ADAM units got forever stuck in the tower, failing to grow. The only ones with their own ego turned out to [[WasOnceAMan originally be humans]] with amnesia.]]
** [[spoiler:Virgil wanted his [=ADAMs=] to replace humanity and has waited for them to grow self-conscious. Humans eventually went extinct for unknown reasons regardless, while the ADAM units got forever stuck in the tower, failing to grow. The only ones with their own ego turned out to [[WasOnceAMan originally be humans]] with amnesia.]]
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-> '''"The androids were to perform in a cage, a dark arena of everlasting combat where hope was destined to be a forgotten memory..."'''
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-> '''"The ''"The androids were to perform in a cage, a dark arena of everlasting combat where hope was destined to be a forgotten memory..."'''
"''
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-> The androids were to perform in a cage, a dark arena of everlasting combat where hope was destined to be a forgotten memory...
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-> The '''"The androids were to perform in a cage, a dark arena of everlasting combat where hope was destined to be a forgotten memory...
memory..."'''
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* DeadAllAlong: The first game's manual mentions that the Towers have been set up for the entertainment of human spectators, so it comes quite a surprise when one of the boss mentions that [[spoiler:humanity has been extinct for centuries]].
* HardModeFiller: in the first game, beating the final boss on the 8th floor has Deucalion taunt you, and you have to replay ever floors again with slightly harder enemy spawns and new boss dialogues. Clearing the new 8th floor shows the true ending.
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* NewGamePlus:
** Enforced in the first game. After the 8th floor, it's just once again the 1st floor, with new boss dialogues. Clearing the new 8th floor shows the true ending.
** Clearing the last floor in the second game unlocks [[spoiler:the second tower]], but lets you challenge the Tower again many times, while keeping everything you have. But all enemies get their health and attack upscaled with better weapon tiers.
** Enforced in the first game. After the 8th floor, it's just once again the 1st floor, with new boss dialogues. Clearing the new 8th floor shows the true ending.
** Clearing the last floor in the second game unlocks [[spoiler:the second tower]], but lets you challenge the Tower again many times, while keeping everything you have. But all enemies get their health and attack upscaled with better weapon tiers.
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* NewGamePlus:
** Enforced in the first game. After the 8th floor, it's just once again the 1st floor, with new boss dialogues. Clearing the new 8th floor shows the true ending.
**NewGamePlus: Clearing the last floor in the second game unlocks [[spoiler:the second tower]], but lets you challenge the Tower again many times, while keeping everything you have. But all enemies get their health and attack upscaled with better weapon tiers.
** Enforced in the first game. After the 8th floor, it's just once again the 1st floor, with new boss dialogues. Clearing the new 8th floor shows the true ending.
**
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Minor tweaks
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* SoundTest: The Gallery menu saves almost all cutscenes and background music encountered, alongside some promo art and renders.
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* SoundTest: The Gallery menu saves almost all cutscenes and background music encountered, alongside [[ReplayMode the cutscenes viewed during the story's campaign]] and [[ConceptArtGallery some promo art and renders.renders]].
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alphabet
* EtherealWhiteDress: Beatrice in the flashback is a regular human operator and a researcher [[LabcoatOfScienceAndMedicine in a labcoat]]. By the time of the Tower's construction, she wears something resembling a FairytaleWeddingDress and acts as the only force of hope in the game.
* EvilGloating: In the second game Gryphus, both as a boss and in the backstory, mocks Gram for having emotions, while he patiently waits doing caluclations to defeat Gram each loop. When killed, he gives an EvilLaugh considering that [[spoiler:Gram has yet to remember the rest, which Beatrice expositions shortly]].
* EvilTowerOfOminousness: Rengoku towers are combat arenas for [=ADAMs=] with an explicit {{Hell}} analogy.
* EvilTowerOfOminousness: Rengoku towers are combat arenas for [=ADAMs=] with an explicit {{Hell}} analogy.
* GreaterScopeVillain: It's heavily implied that [[spoiler:Virgil of Deucalion Group deliberataly gave Captain Gram's squad AI Suits that are easy to oveheat, so when someone eventually dies they would start fighting each other out of paranoia and provide him with better combat data. It's also unclear where did Gryphus get the idea that looting his squad memebers for AI Cells can make yourself stronger, since the squad wasn't told this. Later, seeing how much better the natural data is compared to previous androids, Virgil secretly installs an [[BigBad overseer program]] to keep Rengoku on a loop until [=ADAMs=] start thinking like humans and eventually replace them]].
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* EtherealWhiteDress: Beatrice in the flashback is a regular human operator and a researcher [[LabcoatOfScienceAndMedicine in a labcoat]]. By the time of the Tower's construction, she wears something resembling a FairytaleWeddingDress and acts as the only force of hope in the game.
* EvilGloating: In the second game Gryphus, both as a boss and in the backstory, mocks Gram for having emotions, while he patiently waits doing caluclations to defeat Gram each loop. When killed, he gives an EvilLaugh considering that [[spoiler:Gram has yet to remember the rest, which Beatrice expositions shortly]].
* EvilTowerOfOminousness: Rengoku towers are combat arenas for [=ADAMs=] with an explicit {{Hell}} analogy.
* GreaterScopeVillain: It's heavily implied that [[spoiler:Virgil of Deucalion Group deliberataly gave Captain Gram's squad AI Suits that are easy to oveheat, so when someone eventually dies they would start fighting each other out of paranoia and provide him with better combat data. It's also unclear where did Gryphus get the idea that looting his squad memebers for AI Cells can make yourself stronger, since the squad wasn't told this. Later, seeing how much better the natural data is compared to previous androids, Virgil secretly installs an [[BigBad overseer program]] to keep Rengoku on a loop until [=ADAMs=] start thinking like humans and eventually replace them]].
* EvilGloating: In the second game Gryphus, both as a boss and in the backstory, mocks Gram for having emotions, while he patiently waits doing caluclations to defeat Gram each loop. When killed, he gives an EvilLaugh considering that [[spoiler:Gram has yet to remember the rest, which Beatrice expositions shortly]].
* EvilTowerOfOminousness: Rengoku towers are combat arenas for [=ADAMs=] with an explicit {{Hell}} analogy.
* GreaterScopeVillain: It's heavily implied that [[spoiler:Virgil of Deucalion Group deliberataly gave Captain Gram's squad AI Suits that are easy to oveheat, so when someone eventually dies they would start fighting each other out of paranoia and provide him with better combat data. It's also unclear where did Gryphus get the idea that looting his squad memebers for AI Cells can make yourself stronger, since the squad wasn't told this. Later, seeing how much better the natural data is compared to previous androids, Virgil secretly installs an [[BigBad overseer program]] to keep Rengoku on a loop until [=ADAMs=] start thinking like humans and eventually replace them]].
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* EtherealWhiteDress: Beatrice HairTriggerTemper: Minos in the flashback is a regular human operator and a researcher [[LabcoatOfScienceAndMedicine in a labcoat]]. By the time of the Tower's construction, she wears something resembling a FairytaleWeddingDress and acts as the only force of hope in the game.
* EvilGloating: Inthe second game Gryphus, both as a boss and in the backstory, mocks Gram for having emotions, while he patiently waits doing caluclations is said to defeat Gram each loop. When killed, he gives an EvilLaugh considering that [[spoiler:Gram has yet to remember the rest, which Beatrice expositions shortly]].
* EvilTowerOfOminousness: Rengoku towers are combat arenas for [=ADAMs=] with an explicit {{Hell}} analogy.
* GreaterScopeVillain: It's heavily implied that [[spoiler:Virgil of Deucalion Group deliberataly gave Captain Gram's squad AI Suits that are easy to oveheat, so when someone eventually dies they would start fighting each other out of paranoia and provide him with better combat data. It's also unclear where did Gryphus get the idea that looting his squad memebers for AI Cells can make yourself stronger, since the squad wasn't told this. Later, seeing how much better the natural data is compared to previous androids, Virgil secretly installs an [[BigBad overseer program]] to keep Rengoku on a loop until [=ADAMs=] startattack anyone he's angry at before even thinking like humans and eventually replace them]].hates everyone for increasing the heat on the floor. [[spoiler:It reflects his human life's impulsive nature.]]
* EvilGloating: In
* EvilTowerOfOminousness: Rengoku towers are combat arenas for [=ADAMs=] with an explicit {{Hell}} analogy.
* GreaterScopeVillain: It's heavily implied that [[spoiler:Virgil of Deucalion Group deliberataly gave Captain Gram's squad AI Suits that are easy to oveheat, so when someone eventually dies they would start fighting each other out of paranoia and provide him with better combat data. It's also unclear where did Gryphus get the idea that looting his squad memebers for AI Cells can make yourself stronger, since the squad wasn't told this. Later, seeing how much better the natural data is compared to previous androids, Virgil secretly installs an [[BigBad overseer program]] to keep Rengoku on a loop until [=ADAMs=] start
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* {{Wrath}}: Minos in the second game is said to attack anyone he's angry at before even thinking and hates everyone for increasing the heat on the floor. [[spoiler:It reflects his human life's impulsive nature.]]
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* SuperPrototype: The backstory of the second game tells that [[spoiler:Gram, based on a human Captain Gram]] was a wartime android who has grown higher intelligence. Virgil, the chairman of the Deucalion, seeing it as a symbol of strength, has created the [=ADAMs=] based of his AI data to finish the war, but Beatrice have removed [[spoiler:his memories from the template for personal reasons]]. After his revival, the way he is identified is by having an unparalleled combat skill.
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* SuperPrototype: The backstory of the second game tells that [[spoiler:Gram, based on a human Captain Gram]] was a wartime android who has grown higher intelligence. Virgil, the chairman of the Deucalion, seeing it as a symbol of strength, has created the [=ADAMs=] based of his AI data to finish the war, but Beatrice have has removed [[spoiler:his memories from the template for personal reasons]]. After his revival, the way he is identified is by having an unparalleled combat skill.
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--> Talking-is-irrelevant. It-only-delays-progress. Disengage-your-speech-circuits-and-switch-to-battle-mode-like-the-other-combatants.
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--> I-I-I-I'[=mgonnadestroyeverythingI=]'mgonnadest... Uh, y-y-y-yeh, y-y-yer right."
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* SeeksAnothersResurrection: [=ADAMs=] normally have no personality or distinctive characteristics, so when [[spoiler:the deseased Captain Gram's memories were discovered in ADAM prototypes, Beatrice tried everything to restore him the way he was]].
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* SeeksAnothersResurrection: [=ADAMs=] normally have no personality or distinctive characteristics, so when [[spoiler:the deseased deceased Captain Gram's memories were discovered in ADAM prototypes, Beatrice tried everything to restore him the way he was]].
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* {{Pride}}: The second game tells that [[spoiler:Mars have lacked discipline or self-restraint and have overused his AI Suit, which ended up killing him.]]
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* {{Pride}}: The second game tells that [[spoiler:Mars have [[spoiler:Mars, who is associated with Pride, has lacked discipline or self-restraint and have overused his AI Suit, which ended up killing him.]]
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* {{Pride}}: The second game tells that [[spoiler:Mars have lacked discipline and have overused his AI Suit, which ended up killing him.]]
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* {{Pride}}: The second game tells that [[spoiler:Mars have lacked discipline or self-restraint and have overused his AI Suit, which ended up killing him.]]
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* OneSteveLimit: Averted, the CanonName of both protagonists is Gram, but they have separate backgrounds. Both can be renamed. Bosses also share names across games, but are unlikely to be the same.
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* OneSteveLimit: Averted, the CanonName default name of both protagonists is Gram, but they have separate backgrounds. Both backgrounds and both can be renamed. Bosses also share names across games, but are unlikely to be the same.
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* GreaterScopeVillain: It's heavily implied that [[spoiler:Virgil of Deucalion Group deliberataly gave Captain Gram's squad AI Suits that are easy to oveheat, so they would start killing each other and provide him with better combat data. It's also unclear where Gryphus got the idea that AI Cells can combine to make yourself stronger. Seeing how much better the natural data is compared to androids, he secretly installed an overseer program to keep Rengoku on a loop until [=ADAMs=] start thinking like humans and eventually replace them]].
to:
* GreaterScopeVillain: It's heavily implied that [[spoiler:Virgil of Deucalion Group deliberataly gave Captain Gram's squad AI Suits that are easy to oveheat, so when someone eventually dies they would start killing fighting each other out of paranoia and provide him with better combat data. It's also unclear where did Gryphus got get the idea that looting his squad memebers for AI Cells can combine to make yourself stronger. Seeing stronger, since the squad wasn't told this. Later, seeing how much better the natural data is compared to previous androids, he Virgil secretly installed installs an [[BigBad overseer program program]] to keep Rengoku on a loop until [=ADAMs=] start thinking like humans and eventually replace them]].
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* DividedWeFall: In the past, [[spoiler:Mars got killed by overusing own AI Suit, Lycaon got burned alive by Gryphus and Minos out of {{Revenge}} went against Gryphus alone, wiht Gryphus getting 4 AI Cells. It was proposed by Statius and Sphinx to do the same and fight him with 5 AI Cell Suits versus 4, though of course they wouldn't wait for consensus. In the end Gryphus managed to get all AI Cells with Gram finally killing him before dying himself.]]
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* DividedWeFall: In the past, [[spoiler:Mars got killed by overusing own AI Suit, Lycaon got burned alive by Gryphus and Minos out of {{Revenge}} went against Gryphus alone, wiht thus Gryphus getting 4 AI Cells. It was proposed by Statius and Sphinx to do the same and fight him with 5 AI Cell Suits versus 4, though of course they wouldn't wait for consensus. In the end Gryphus managed to get all AI Cells with Gram finally killing him before dying himself.]]
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* BlindedByRage: Each boss is said to be so "blided by their sin", they would have recognized [[spoiler:that Gram is their Captain if not for spending to much time in own self-loathing]].
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* BlindedByRage: Each boss is said to be so "blided "blinded by their sin", they would have recognized [[spoiler:that Gram is their Captain if not for spending to too much time in own self-loathing]].
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** Each of the Rengoku Towers have the floors floating separated and misaligned from each other.
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** Each of the Rengoku Towers have has the floors floating separated and misaligned from each other.
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Since it's an index, removed until further clarification
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* BiblicalMotifs: Besides the artificial men called ADAM being stuck in Purgatory and all the GratuitousLatin, the second game drops an avalanche of biblical themes. From the tower being treated as {{Hell}} of SevenDeadlySins, the top of the tower symbolizing {{Heaven}} and the outside world being called Eden, and so on. One cutscene also quotes Matthew 10:28.
--> '''The save screen:''' Open St. Peter's gate, ye souls. Come and be cleansed of thy sins.
--> '''The save screen:''' Open St. Peter's gate, ye souls. Come and be cleansed of thy sins.
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The victors, Deucalion Group, not knowing what else to do with with an army of highly intelligent and purposeless war androids, have decided to reprogram them for endless {{Gladiator Game|s}}. Not wanting to simply destroy them, Deucalion have created for them Purgatory, the first of the many Rengoku Towers, and sealed it away, while the repetitive ascension is being broadcasted for the public entertainment.
to:
The victors, Deucalion Group, not knowing what else to do with with an army of highly intelligent and purposeless war androids, have decided to reprogram them for an endless {{Gladiator Game|s}}. Not wanting to simply destroy them, Deucalion have created for them Purgatory, the first of the many Rengoku Towers, and sealed it away, while the repetitive ascension is being broadcasted for the public entertainment.
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Added DiffLines:
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/rengokupsp_2.png]]
-> The androids were to perform in a cage, a dark arena of everlasting combat where hope was destined to be a forgotten memory...
In TheFuture, humanity, trying to avoid casualties in wars, has started to rely on {{Robot Soldier}}s. Through the LensmanArmsRace, the ultimate androids have emerged, A.D.A.M. (Autonomous Duelling Armed Machine), capable of [[ShapeshifterWeapon morphing their body into weapons]] with Elixir Skin, finally bringing the war to the end.
The victors, Deucalion Group, not knowing what else to do with with an army of highly intelligent and purposeless war androids, have decided to reprogram them for endless {{Gladiator Game|s}}. Not wanting to simply destroy them, Deucalion have created for them Purgatory, the first of the many Rengoku Towers, and sealed it away, while the repetitive ascension is being broadcasted for the public entertainment.
Until one A.D.A.M. gladiator Gram GrewBeyondTheirProgramming and decided to escape.
''Rengoku: The Tower of Purgatory'' is an ActionRPG for UsefulNotes/PlayStationPortable by Creator/{{Neverland}} and Creator/HudsonSoft, published by Creator/{{Konami}} in April 26, 2005. Features illustrations by Jun Suemi.
''Rengoku II: The Stairway to H.E.A.V.E.N.'', released in April 27, 2006, is a SoftReboot that takes place in another tower, with an A.D.A.M. unit awakening some of his wartime memories as Captain Gram and seeking answers.
----
!!''Rengoku'' provides the examples of:
* AbusiveParents: AI Deucalion treats [=ADAMs=] like children and as her actual children, and is both angered and proud by the thought of a unit having a rebellious attitude.
* AccidentalHero: [[spoiler:Virgil has created [=ADAMs=] based on Captain Gram memories. Beatrice, who was in love with Gram, has tampered with the uploading to remove his personality so there wouldn't be thousands of Grams and left only combat data. It turns out Virgil had a secondary plan to turn [=ADAMs=] into the new master race and needed them to develop consciousness. So while he was able to end the Machine War, Beatrice unwittingly made it so his he was unable to start the new one against mankind.]]
* AllForNothing:
** [[spoiler:Purgatory has no spectators, they've went extinct centuries ago. So all [=ADAMs=] are fighting each other simply becuase they don't or can't question the program]].
** [[spoiler:Virgil wanted his [=ADAMs=] to replace humanity and has waited for them to grow self-conscious. Humans eventually went extinct for unknown reasons regardless, while the ADAM units got forever stuck in the tower, failing to grow. The only ones with own ego turned out to [[WasOnceAMan originally be humans]] with amnesia.]]
* AmnesiacHero: The ADAM protagonist of the second game has pieces of Captain Gram's memories, and is looking for the rest of them. [[spoiler:Turns out Gram and the floor bosses were human mercenaries and victims of being consumed by nanomachines with a side-effect of BrainUploading into brand-new ADAM units, and this tower was designed by Beatrice to hopefully trigger flashbacks from him.]]
* AmnesiaLoop: It's heavily implied that being defeated by Gryphus on the last floor also completely resets the ADAM, as floor masters react to Gram as if they've fought countless times already. It's intentional in both games, as [[spoiler:in the first game Deucalion awaits an ADAM with enough will to break the cycle, while in the second game Beartice waits from Gram to recover his memories.]]
* BiblicalMotifs: Besides the artificial men called ADAM being stuck in Purgatory and all the GratuitousLatin, the second game drops an avalanche of biblical themes. From the tower being treated as {{Hell}} of SevenDeadlySins, the top of the tower symbolizing {{Heaven}} and the outside world being called Eden, and so on. One cutscene also quotes Matthew 10:28.
--> '''The save screen:''' Open St. Peter's gate, ye souls. Come and be cleansed of thy sins.
* BigBad: In the first game, AI Deucalion, the overseer of Purgatory, is enforcing all [=ADAMs=] to [[spoiler:continue the GladiatorGames despite there be nobody to watch them. It's also training the ultimate fighting machine when there's nobody else to fight]], and keeps Gryphus as her guardian. In the second game the last enemy is [[spoiler:also Deucalion, further elaborated as being instructed by Virgil to make [=ADAMs=] [[TurnedAgainstTheirMasters turn on humans]] when they prove to have grown a will of their own]].
* {{Bizarrchitecture}}:
** Each of the Rengoku Towers have the floors floating separated and misaligned from each other.
** The doors on the 8th floor in the second game act more like portals, as the "rooms" are floating platforms that are separated from each other.
* BlindedByRage: Each boss is said to be so "blided by their sin", they would have recognized [[spoiler:that Gram is their Captain if not for spending to much time in own self-loathing]].
* BlindWeaponmaster: Lycaon in the second game has his eyes burned and allegedly can't see, yet he can jump right onto the player with his heating swords and turn invincible.
* BloodKnight: All [=ADAMs=] are programmed to fight without thinking about anything else, but Briareos especially finds joy in it.
* CameraLockOn: The player can lock onto the enemies and switch between them, making ranged and melee weapons aim at them automatically.
* ChildSoldiers: A flashback in the second game tells that [[spoiler:Captain Gram]] was wiping blood during the Machine War when a normal kid would play with toys, and was considered a veteran at a very young age.
* ContinuingIsPainful:
** Downplayed. Dying makes you Meltdown and return to the floor entrance, while dropping all carried weapons in the room to be picked up later. Depending on if the player has any backup set of weapons, it may be a challenge to not only progress through the floor, but also getting the old gear back.
** Played straight with HEAVEN challenges in the second game, which use a separate inventory. On Meltdown, HEAVEN-A puts you 4 floors below, while HEAVEN-B and HEAVEN-C kick you out enitrely.
* DisappointedByTheMotive: Near the end of the second game Beatrice explains that [[spoiler:she has ressurected Gram as ADAM becuase she wanted to see him again after his horrible death. But, becuase he has lost his memories, in order to help him recover, she has ressurected his comrades as [=ADAMs=] as well. And made Gram kill them all, which turned into a convinient chance to give him closure for the past incident. He tells her they all should have just stayed dead and attacks her hologram.]]
* DiscOneFinalBoss: After defeating [[FinalBoss Gryphus]] in the second game, [[spoiler:Beatrice unlocks ''another tower'' called [[TitleDrop H.E.A.V.E.N.]], with the high-level AI [[TrueFinalBoss Deucalion]], named after the company that created [=ADAMs=], at the top]].
* DividedWeFall: In the past, [[spoiler:Mars got killed by overusing own AI Suit, Lycaon got burned alive by Gryphus and Minos out of {{Revenge}} went against Gryphus alone, wiht Gryphus getting 4 AI Cells. It was proposed by Statius and Sphinx to do the same and fight him with 5 AI Cell Suits versus 4, though of course they wouldn't wait for consensus. In the end Gryphus managed to get all AI Cells with Gram finally killing him before dying himself.]]
* DoAndroidsDream: The protagonist android in the first game stands out by protecting his "will", while others have, according to Statius, have been in a cycle of fighting over 6 million times and are either okay with it or don't have enough ego to go against it.
* EternalEngine: The 3rd floor in the second game is a factory level filled with rivers of liquid metal and flaming pipes.
* EverythingBreaks: The second game introduces a lot of destructable obstacles like crates, pillars and sliding doors.
* EvilIsBigger: Mars, Sphinx and Alcmaeon bosses in the second have a unique body shape that is a couple times larger than any ADAM.
* ExperiencePoints: The games have five separate Skill bars, that are filled by defeating enemies with respective weapon type. Each level multiplies the stats of weapons of that type. Each eqipment can also gain up to 30 points from continuous use.
* FinalBoss:
** Gryphus in both games is the mysterious champion of Purgatory and the master of the last floor. In the first game he has to be defeated at the end of the second ascension as well.
** The [[spoiler:[[PreviousPlayerCharacterCameo first protagonist]], or at least an ADAM with the same equipment]], is boss of HEAVEN-99 in the second game, and after that is just [[spoiler:a gauntlet against {{Mook}}s and a ZeroEffortBoss]].
* FluffyCloudHeaven: Paradisus in the second game, desgined after {{Heaven}}, has disconnected stone platforms overgrown with plants, floating in the sky surrounded by clouds.
* TheFuture: The game takes place in "the near future" where using robots and remotely-piloted machines for wars became so common, human soldiers became obsolete.
* GainaxEnding: In the ending of the first game the BigBad tells the protagonist that [[spoiler:his growth was part of the Purgatory Project the entire time and blesses it to leave for future battles]], with no elaboration what either of those mean.
* GladiatorGames: ADAM soldiers are reprogrammed to fight each other, while humans watch from home, bewildered and amused by their combat capabilities and gamble on champions.
* {{Greed}}: In the second game Sphinx is excited to steal Gram's Elixir Skin for himself. It reflects [[spoiler:his PastLifeMemories where he wanted to kill his teammates to have their AI Suits.]]
* GreenEyedMonster: In the second game Lycaon says he'll loot the player's weapons because they look superior. It reflects [[spoiler:his human self wanting Mars's Suit becuase he envied Gram's strength, but he was killed by Gryphus by glitching out his Suit]].
* GrewBeyondTheirProgramming:
** The protagonist android of the first game has developed an ego after all the fighting and decided [[GladiatorRevolt he had enough of it]].
** Captain Gram stands out as being capable of emotions while [=ADAMs=] are believed to retain no thought process that isn't useful for combat. One of the first signs of it is checking the sky for no specific purpose. [[spoiler:Him having human memories would explain it.]]
** Minos in the first game, unlike other bosses, shows sign of own will, though is compelled to continue fighting due to the programming. [[spoiler:During the second ascension Deucalion takes over him to remove the "programming flaw".]]
** In both games it turns out [[spoiler:Gryphus is NotBrainwashed. In the first game he acts as Deucalion's bodyguard becuase there's nothing left for them outside, while in the second game he has regained his human memories of Gram's traitorous teammate and chose to wait for him instead of leaving himself ForTheEvulz.]]
* EtherealWhiteDress: Beatrice in the flashback is a regular human operator and a researcher [[LabcoatOfScienceAndMedicine in a labcoat]]. By the time of the Tower's construction, she wears something resembling a FairytaleWeddingDress and acts as the only force of hope in the game.
* EvilGloating: In the second game Gryphus, both as a boss and in the backstory, mocks Gram for having emotions, while he patiently waits doing caluclations to defeat Gram each loop. When killed, he gives an EvilLaugh considering that [[spoiler:Gram has yet to remember the rest, which Beatrice expositions shortly]].
* EvilTowerOfOminousness: Rengoku towers are combat arenas for [=ADAMs=] with an explicit {{Hell}} analogy.
* GreaterScopeVillain: It's heavily implied that [[spoiler:Virgil of Deucalion Group deliberataly gave Captain Gram's squad AI Suits that are easy to oveheat, so they would start killing each other and provide him with better combat data. It's also unclear where Gryphus got the idea that AI Cells can combine to make yourself stronger. Seeing how much better the natural data is compared to androids, he secretly installed an overseer program to keep Rengoku on a loop until [=ADAMs=] start thinking like humans and eventually replace them]].
* HealingFactor: As long as an ADAM unit isn't taken down, the Elixir Skin will regenerate any damage. Even if they Meltdown, they liquify and return FromASingleCell later.
* HellIsWar: The Tower in the second game is described as hell where [=ADAMs=] have to keep fighting, unable to die or have other thoughts.
* HelloInsertNameHere: In both games the protagonists can be renamed at the start, while GRAM is the default name.
* HitStop: In the second game depleting boss's health pauses the game and the camera shows the player then the boss before continuing.
* HubLevel: In the second game the 0th floor has transporters to all other floors.
* HumanitysWake: Statius in both games drops that [[spoiler:there are no spectators, humanity have died out ages ago and the Purgatory remained automated. [=ADAMs=] are fighting for literally no reason, but can't go against the programming. In the second game Beatrice says she and Gram are the only "souls" left on the planet.]]
* ICannotSelfTerminate:
** Minos in the first game complains that as an immortal who can't resist commands in his head, he can only wish to be "released".
** Mars in the second game lives in constant pain, which is [[spoiler:a reflection of his human self being consumed by the AI Suit]], and thanks Gram for putting him to rest.
* InconvenientlyPlacedConveyorBelt: The 4th floor in the second game is filled with conveyor belts. While it makes traversing the floor faster, it can hinder the combat.
* ItsAllUpstairsFromHere: Both games involve going from the 0th to the 8th floor and defeating the floor masters along the way.
* IWantMyMommy: In the second game Mars calls out for his mother before disintegrating, saying he can finally sleep.
* JigsawPuzzlePlot: The game manuals only provide the basic summary, while the rest of the story is told by bosses and post-floor cutscenes one at a time. While the plot of the first game is still minimalistic, in the second game many named characters have a lot to say about how the Tower came to be.
* KillEnemiesToOpen: Some doors in the second game are marked with an orange flower, meaning they can't open upon entering without defeating the enemies.
* KillItWithFire: In the second game Minos has flamethrowers and can leave trails of fire on the floor.
* LauncherMove: Using a grapling weapon throws an opponent upwards. Using two graple weapons lets you [[CycleOfHurting make the opponent unable to do anything]].
* LazyBum: In the second game's backstory Briareos was [[spoiler:a mercenary who never did much, to not "do anything wrong". He end ends up being shot after trying to flee from Gryphus]]. As a boss, he uses ranged laser weapons to attack and conveyer belts to move around.
* LevelGrinding: Leaving a floor and returning brings back the enemies, which is the way to get strong enough to challenge endgame bosses.
* LotusEaterMachine: During the war, the Program put defeated [=ADAMs=] into a virtual reality combat "nightmare" for AI training, while they have memories manipulated to assume they fight for real, before actually returning to the battlefield.
* LuckilyMyShieldWillProtectMe: One of the possible arm equipments are shields that reduce damage at the cost of durability.
* {{Lust}}: Statius in the second game is a BloodKnight with a "lust for battle", searching for a feeling he doesn't understand he gets by defeating enemies.
* MiniBoss: Each floor in the second game has several Challenge Rooms, which spawn high-level orange-colored ADAM enemies. These are required to be cleared to unlock the floor boss.
* MyGirlBackHome: During the war, [[spoiler:Beatrice, a machine operator, has fallen in love with Captain Gram, a mercenary]], and waited for him to return. She cries TearsOfJoy [[spoiler:and horror when she notices the prototype-ADAM learning data had his memories inside]].
* NostalgiaLevel: [[spoiler:H.E.A.V.E.N. in the second game]] is a copy of the Purgatory tower from the first game, along with the music.
* {{Nanomachines}}: Elixir Skin are described as autonomous AI cells that shape an ADAM with liquid plastic fibers and create weapons. In-game they act as currency for upgrades.
* NewGamePlus:
** Enforced in the first game. After the 8th floor, it's just once again the 1st floor, with new boss dialogues. Clearing the new 8th floor shows the true ending.
** Clearing the last floor in the second game unlocks [[spoiler:the second tower]], but lets you challenge the Tower again many times, while keeping everything you have. But all enemies get their health and attack upscaled with better weapon tiers.
* OneSteveLimit: Averted, the CanonName of both protagonists is Gram, but they have separate backgrounds. Both can be renamed. Bosses also share names across games, but are unlikely to be the same.
* {{Overheating}}: Using weapons or dodging fills the heat meter of the respective body part. Using the same weapon without alternating causes it to Overheat and be unusable for a few seconds. Some weapons are fire-oriented and are used to disable the opponents.
* PaletteSwap: The boss of [[spoiler:HEAVEN-66]] is just Gryphus but blue instead of red.
* {{Pride}}: The second game tells that [[spoiler:Mars have lacked discipline and have overused his AI Suit, which ended up killing him.]]
* PublicDomainSoundtrack: Mozart's ''Lacrimosa'' is used in the final cutscene of the first game.
* QuestForIdentity: In the second game an ADAM keeps getting memories of Captain Gram and decides to uncover them. Killing bosses makes him remember [[spoiler:they were his comrades, and Beatrice who is in love with him has designed the tower to help him remember]].
* RecycledSoundtrack: The opening cutscene for the second game uses the Evacuation theme from ''Film/Armageddon1998''.
* ResurrectiveImmortality: The ADAM units are made of {{Nanomachines}}, so when they are killed they liquify, return to the base and resume the fight.
* RobotSoldier: The GreatOffscreenWar has evolved into what's called the Machine War, with everyone fighting with remotely controlled machinery and later androids. The new ADAM units were so efficient, they've quickly put the war to an end.
* TrainingFromHell: Defeated [=ADAMs=] in the second game are said to be put into a Program, a combat simulator after which they either return stronger or have an "AI breakdown".
* SeeksAnothersResurrection: [=ADAMs=] normally have no personality or distinctive characteristics, so when [[spoiler:the deseased Captain Gram's memories were discovered in ADAM prototypes, Beatrice tried everything to restore him the way he was]].
* SevenDeadlySins: The floors in the second game are themed after Pride, Envy, Wrath, Sloth, Greed, Gluttony, Lust, with Paradise as the last one.
--> Mars, whose pride proved his downfall.
--> Lycaon, who envied the strength of others.
--> Minos, whose actions were ruled by rage.
--> Briareos, who was too lazy to live his life.
--> Sphinx, whose greed could never remain hidden.
--> Alcmaeon, the glutton who hungered for passion.
--> Statius, who lusted for joy even in battle.
* ShapeshifterDefaultForm: All [=ADAMs=] with no equipment default to the appearance of a naked man with TronLines.
* ShapeshifterWeapon: ADAM units can morph their arms, head, torso, and legs into swords, guns, hammers, crossbows etc.
* StarterEquipment: Without weapons, the player can still be a BareFistedMonk, just with very low attack and defense.
* StationaryBoss: Sphinx in the second game cannot move from the center of the room and relies on ranged plasma rifles.
* SoftReboot: The second game requires no knowledge of the first game, though there are some spoilers shared by both games. All named characters are given new personalities and elaborate backstories. While Purgatory is namedropped in the flashbacks, the current Rengoku is simply called the Tower, while [[spoiler:the second tower that heavily resembles the one from the first game is called HEAVEN]].
* SoundTest: The Gallery menu saves almost all cutscenes and background music encountered, alongside some promo art and renders.
* SpeechImpediment:
** Mars in the first game speaks by colliding words.
--> Talking-is-irrelevant. It-only-delays-progress. Disengage-your-speech-circuits-and-switch-to-battle-mode-like-the-other-combatants.
** In the second game Briareos is a BloodKnight that constantly stutters and repeats his thoughts.
--> I-I-I-I'[=mgonnadestroyeverythingI=]'mgonnadest... Uh, y-y-y-yeh, y-y-yer right."
* SuperPrototype: The backstory of the second game tells that [[spoiler:Gram, based on a human Captain Gram]] was a wartime android who has grown higher intelligence. Virgil, the chairman of the Deucalion, seeing it as a symbol of strength, has created the [=ADAMs=] based of his AI data to finish the war, but Beatrice have removed [[spoiler:his memories from the template for personal reasons]]. After his revival, the way he is identified is by having an unparalleled combat skill.
* UltimateLifeForm: [=ADAMs=] are considered the ultimate weapon with their ResurrectiveImmortality and growing intellect. [[spoiler:Virgil believes they should even replace humans.]]
* UnusualWeaponMounting: One of the more commonly seen weapons are a cannon in the chest or a giant pistol as the head.
* VideoGameCrueltyPotential: A defeated enemy has an additional health bar, attacking it before it despawns gives additional loot.
* VillainousGlutton: In the second game Alcmaeon is a fat boss who considers Gram his "meal" and calls his weapons "tasty".
* VillainOverride: In the first game [[spoiler:AI Deucalion takes over Minos during the second ascension for thinking too much]].
* VisionaryVillain: According to the second game, [[spoiler:the chairman of Deucalion Group, Virgil, have deduced that his [=ADAMs=] are the better lifeforms than humans, added a secret purpose to the Purgatory tower to help them develop self-awareness. In case they grow conscious like Captain Gram, the AI manager Deucalion would unleash them to the world. Ironically, Gram WasOnceAMan and escapes himself after humanity have long went extinct]].
* WalkingArmory: Stronger [=ADAMs=] are normally equipped with blades, rockets, and lasers at the same time. The game heavily encourages mixing weapon types and categories.
* WarIsHell: Even before the GreatOffscreenWar have become the Machine War, it's described as "endless grief and desolation". Nobody even remembers how it started or what it was for.
* WasOnceAMan: The flashbacks show that [[spoiler:the ADAM bosses in the second game were human mercenaries of Captain Gram's squad with a strong bond. They were once given "AI cell suits" by Deucalion for "testing", and were told they just have good shock-absorbtion. Mars got consumed by it, while Gryphus has killed Lycaon and Minos for power. The others have killed each other thinking they can counter Gryphus and eventually he got 8 cells, but was shot by transformed Gram. And now all of them are [=ADAMs=]]].
* WholePlotReference: The second game is heavily inspired by ''Literature/TheDivineComedy'', with the hero going through the "seven circles of hell" before reaching "Heaven", with Beatrice and Virgil as important characters. The strongest sword in the game is called Dante.
* {{Wrath}}: Minos in the second game is said to attack anyone he's angry at before even thinking and hates everyone for increasing the heat on the floor. [[spoiler:It reflects his human life's impulsive nature.]]
* YouDontLookLikeYou: All bosses in the second game share names with ones from the the first, but all are given new NonStandardCharacterDesign except for Gryphus who looks the same.
* ZeroEffortBoss: [[spoiler:[[TrueFinalBoss AI Deucalion]] is the last enemy in the second game]], but it doesn't attack. It calls Gram a WarGod and hopes he enjoys fighting forever, [[spoiler:with a teleporter to return to the game. Alternatively]], if you attack it, it dies in a couple of hits [[spoiler:and shows the ending cutscene]].
----
-> The androids were to perform in a cage, a dark arena of everlasting combat where hope was destined to be a forgotten memory...
In TheFuture, humanity, trying to avoid casualties in wars, has started to rely on {{Robot Soldier}}s. Through the LensmanArmsRace, the ultimate androids have emerged, A.D.A.M. (Autonomous Duelling Armed Machine), capable of [[ShapeshifterWeapon morphing their body into weapons]] with Elixir Skin, finally bringing the war to the end.
The victors, Deucalion Group, not knowing what else to do with with an army of highly intelligent and purposeless war androids, have decided to reprogram them for endless {{Gladiator Game|s}}. Not wanting to simply destroy them, Deucalion have created for them Purgatory, the first of the many Rengoku Towers, and sealed it away, while the repetitive ascension is being broadcasted for the public entertainment.
Until one A.D.A.M. gladiator Gram GrewBeyondTheirProgramming and decided to escape.
''Rengoku: The Tower of Purgatory'' is an ActionRPG for UsefulNotes/PlayStationPortable by Creator/{{Neverland}} and Creator/HudsonSoft, published by Creator/{{Konami}} in April 26, 2005. Features illustrations by Jun Suemi.
''Rengoku II: The Stairway to H.E.A.V.E.N.'', released in April 27, 2006, is a SoftReboot that takes place in another tower, with an A.D.A.M. unit awakening some of his wartime memories as Captain Gram and seeking answers.
----
!!''Rengoku'' provides the examples of:
* AbusiveParents: AI Deucalion treats [=ADAMs=] like children and as her actual children, and is both angered and proud by the thought of a unit having a rebellious attitude.
* AccidentalHero: [[spoiler:Virgil has created [=ADAMs=] based on Captain Gram memories. Beatrice, who was in love with Gram, has tampered with the uploading to remove his personality so there wouldn't be thousands of Grams and left only combat data. It turns out Virgil had a secondary plan to turn [=ADAMs=] into the new master race and needed them to develop consciousness. So while he was able to end the Machine War, Beatrice unwittingly made it so his he was unable to start the new one against mankind.]]
* AllForNothing:
** [[spoiler:Purgatory has no spectators, they've went extinct centuries ago. So all [=ADAMs=] are fighting each other simply becuase they don't or can't question the program]].
** [[spoiler:Virgil wanted his [=ADAMs=] to replace humanity and has waited for them to grow self-conscious. Humans eventually went extinct for unknown reasons regardless, while the ADAM units got forever stuck in the tower, failing to grow. The only ones with own ego turned out to [[WasOnceAMan originally be humans]] with amnesia.]]
* AmnesiacHero: The ADAM protagonist of the second game has pieces of Captain Gram's memories, and is looking for the rest of them. [[spoiler:Turns out Gram and the floor bosses were human mercenaries and victims of being consumed by nanomachines with a side-effect of BrainUploading into brand-new ADAM units, and this tower was designed by Beatrice to hopefully trigger flashbacks from him.]]
* AmnesiaLoop: It's heavily implied that being defeated by Gryphus on the last floor also completely resets the ADAM, as floor masters react to Gram as if they've fought countless times already. It's intentional in both games, as [[spoiler:in the first game Deucalion awaits an ADAM with enough will to break the cycle, while in the second game Beartice waits from Gram to recover his memories.]]
* BiblicalMotifs: Besides the artificial men called ADAM being stuck in Purgatory and all the GratuitousLatin, the second game drops an avalanche of biblical themes. From the tower being treated as {{Hell}} of SevenDeadlySins, the top of the tower symbolizing {{Heaven}} and the outside world being called Eden, and so on. One cutscene also quotes Matthew 10:28.
--> '''The save screen:''' Open St. Peter's gate, ye souls. Come and be cleansed of thy sins.
* BigBad: In the first game, AI Deucalion, the overseer of Purgatory, is enforcing all [=ADAMs=] to [[spoiler:continue the GladiatorGames despite there be nobody to watch them. It's also training the ultimate fighting machine when there's nobody else to fight]], and keeps Gryphus as her guardian. In the second game the last enemy is [[spoiler:also Deucalion, further elaborated as being instructed by Virgil to make [=ADAMs=] [[TurnedAgainstTheirMasters turn on humans]] when they prove to have grown a will of their own]].
* {{Bizarrchitecture}}:
** Each of the Rengoku Towers have the floors floating separated and misaligned from each other.
** The doors on the 8th floor in the second game act more like portals, as the "rooms" are floating platforms that are separated from each other.
* BlindedByRage: Each boss is said to be so "blided by their sin", they would have recognized [[spoiler:that Gram is their Captain if not for spending to much time in own self-loathing]].
* BlindWeaponmaster: Lycaon in the second game has his eyes burned and allegedly can't see, yet he can jump right onto the player with his heating swords and turn invincible.
* BloodKnight: All [=ADAMs=] are programmed to fight without thinking about anything else, but Briareos especially finds joy in it.
* CameraLockOn: The player can lock onto the enemies and switch between them, making ranged and melee weapons aim at them automatically.
* ChildSoldiers: A flashback in the second game tells that [[spoiler:Captain Gram]] was wiping blood during the Machine War when a normal kid would play with toys, and was considered a veteran at a very young age.
* ContinuingIsPainful:
** Downplayed. Dying makes you Meltdown and return to the floor entrance, while dropping all carried weapons in the room to be picked up later. Depending on if the player has any backup set of weapons, it may be a challenge to not only progress through the floor, but also getting the old gear back.
** Played straight with HEAVEN challenges in the second game, which use a separate inventory. On Meltdown, HEAVEN-A puts you 4 floors below, while HEAVEN-B and HEAVEN-C kick you out enitrely.
* DisappointedByTheMotive: Near the end of the second game Beatrice explains that [[spoiler:she has ressurected Gram as ADAM becuase she wanted to see him again after his horrible death. But, becuase he has lost his memories, in order to help him recover, she has ressurected his comrades as [=ADAMs=] as well. And made Gram kill them all, which turned into a convinient chance to give him closure for the past incident. He tells her they all should have just stayed dead and attacks her hologram.]]
* DiscOneFinalBoss: After defeating [[FinalBoss Gryphus]] in the second game, [[spoiler:Beatrice unlocks ''another tower'' called [[TitleDrop H.E.A.V.E.N.]], with the high-level AI [[TrueFinalBoss Deucalion]], named after the company that created [=ADAMs=], at the top]].
* DividedWeFall: In the past, [[spoiler:Mars got killed by overusing own AI Suit, Lycaon got burned alive by Gryphus and Minos out of {{Revenge}} went against Gryphus alone, wiht Gryphus getting 4 AI Cells. It was proposed by Statius and Sphinx to do the same and fight him with 5 AI Cell Suits versus 4, though of course they wouldn't wait for consensus. In the end Gryphus managed to get all AI Cells with Gram finally killing him before dying himself.]]
* DoAndroidsDream: The protagonist android in the first game stands out by protecting his "will", while others have, according to Statius, have been in a cycle of fighting over 6 million times and are either okay with it or don't have enough ego to go against it.
* EternalEngine: The 3rd floor in the second game is a factory level filled with rivers of liquid metal and flaming pipes.
* EverythingBreaks: The second game introduces a lot of destructable obstacles like crates, pillars and sliding doors.
* EvilIsBigger: Mars, Sphinx and Alcmaeon bosses in the second have a unique body shape that is a couple times larger than any ADAM.
* ExperiencePoints: The games have five separate Skill bars, that are filled by defeating enemies with respective weapon type. Each level multiplies the stats of weapons of that type. Each eqipment can also gain up to 30 points from continuous use.
* FinalBoss:
** Gryphus in both games is the mysterious champion of Purgatory and the master of the last floor. In the first game he has to be defeated at the end of the second ascension as well.
** The [[spoiler:[[PreviousPlayerCharacterCameo first protagonist]], or at least an ADAM with the same equipment]], is boss of HEAVEN-99 in the second game, and after that is just [[spoiler:a gauntlet against {{Mook}}s and a ZeroEffortBoss]].
* FluffyCloudHeaven: Paradisus in the second game, desgined after {{Heaven}}, has disconnected stone platforms overgrown with plants, floating in the sky surrounded by clouds.
* TheFuture: The game takes place in "the near future" where using robots and remotely-piloted machines for wars became so common, human soldiers became obsolete.
* GainaxEnding: In the ending of the first game the BigBad tells the protagonist that [[spoiler:his growth was part of the Purgatory Project the entire time and blesses it to leave for future battles]], with no elaboration what either of those mean.
* GladiatorGames: ADAM soldiers are reprogrammed to fight each other, while humans watch from home, bewildered and amused by their combat capabilities and gamble on champions.
* {{Greed}}: In the second game Sphinx is excited to steal Gram's Elixir Skin for himself. It reflects [[spoiler:his PastLifeMemories where he wanted to kill his teammates to have their AI Suits.]]
* GreenEyedMonster: In the second game Lycaon says he'll loot the player's weapons because they look superior. It reflects [[spoiler:his human self wanting Mars's Suit becuase he envied Gram's strength, but he was killed by Gryphus by glitching out his Suit]].
* GrewBeyondTheirProgramming:
** The protagonist android of the first game has developed an ego after all the fighting and decided [[GladiatorRevolt he had enough of it]].
** Captain Gram stands out as being capable of emotions while [=ADAMs=] are believed to retain no thought process that isn't useful for combat. One of the first signs of it is checking the sky for no specific purpose. [[spoiler:Him having human memories would explain it.]]
** Minos in the first game, unlike other bosses, shows sign of own will, though is compelled to continue fighting due to the programming. [[spoiler:During the second ascension Deucalion takes over him to remove the "programming flaw".]]
** In both games it turns out [[spoiler:Gryphus is NotBrainwashed. In the first game he acts as Deucalion's bodyguard becuase there's nothing left for them outside, while in the second game he has regained his human memories of Gram's traitorous teammate and chose to wait for him instead of leaving himself ForTheEvulz.]]
* EtherealWhiteDress: Beatrice in the flashback is a regular human operator and a researcher [[LabcoatOfScienceAndMedicine in a labcoat]]. By the time of the Tower's construction, she wears something resembling a FairytaleWeddingDress and acts as the only force of hope in the game.
* EvilGloating: In the second game Gryphus, both as a boss and in the backstory, mocks Gram for having emotions, while he patiently waits doing caluclations to defeat Gram each loop. When killed, he gives an EvilLaugh considering that [[spoiler:Gram has yet to remember the rest, which Beatrice expositions shortly]].
* EvilTowerOfOminousness: Rengoku towers are combat arenas for [=ADAMs=] with an explicit {{Hell}} analogy.
* GreaterScopeVillain: It's heavily implied that [[spoiler:Virgil of Deucalion Group deliberataly gave Captain Gram's squad AI Suits that are easy to oveheat, so they would start killing each other and provide him with better combat data. It's also unclear where Gryphus got the idea that AI Cells can combine to make yourself stronger. Seeing how much better the natural data is compared to androids, he secretly installed an overseer program to keep Rengoku on a loop until [=ADAMs=] start thinking like humans and eventually replace them]].
* HealingFactor: As long as an ADAM unit isn't taken down, the Elixir Skin will regenerate any damage. Even if they Meltdown, they liquify and return FromASingleCell later.
* HellIsWar: The Tower in the second game is described as hell where [=ADAMs=] have to keep fighting, unable to die or have other thoughts.
* HelloInsertNameHere: In both games the protagonists can be renamed at the start, while GRAM is the default name.
* HitStop: In the second game depleting boss's health pauses the game and the camera shows the player then the boss before continuing.
* HubLevel: In the second game the 0th floor has transporters to all other floors.
* HumanitysWake: Statius in both games drops that [[spoiler:there are no spectators, humanity have died out ages ago and the Purgatory remained automated. [=ADAMs=] are fighting for literally no reason, but can't go against the programming. In the second game Beatrice says she and Gram are the only "souls" left on the planet.]]
* ICannotSelfTerminate:
** Minos in the first game complains that as an immortal who can't resist commands in his head, he can only wish to be "released".
** Mars in the second game lives in constant pain, which is [[spoiler:a reflection of his human self being consumed by the AI Suit]], and thanks Gram for putting him to rest.
* InconvenientlyPlacedConveyorBelt: The 4th floor in the second game is filled with conveyor belts. While it makes traversing the floor faster, it can hinder the combat.
* ItsAllUpstairsFromHere: Both games involve going from the 0th to the 8th floor and defeating the floor masters along the way.
* IWantMyMommy: In the second game Mars calls out for his mother before disintegrating, saying he can finally sleep.
* JigsawPuzzlePlot: The game manuals only provide the basic summary, while the rest of the story is told by bosses and post-floor cutscenes one at a time. While the plot of the first game is still minimalistic, in the second game many named characters have a lot to say about how the Tower came to be.
* KillEnemiesToOpen: Some doors in the second game are marked with an orange flower, meaning they can't open upon entering without defeating the enemies.
* KillItWithFire: In the second game Minos has flamethrowers and can leave trails of fire on the floor.
* LauncherMove: Using a grapling weapon throws an opponent upwards. Using two graple weapons lets you [[CycleOfHurting make the opponent unable to do anything]].
* LazyBum: In the second game's backstory Briareos was [[spoiler:a mercenary who never did much, to not "do anything wrong". He end ends up being shot after trying to flee from Gryphus]]. As a boss, he uses ranged laser weapons to attack and conveyer belts to move around.
* LevelGrinding: Leaving a floor and returning brings back the enemies, which is the way to get strong enough to challenge endgame bosses.
* LotusEaterMachine: During the war, the Program put defeated [=ADAMs=] into a virtual reality combat "nightmare" for AI training, while they have memories manipulated to assume they fight for real, before actually returning to the battlefield.
* LuckilyMyShieldWillProtectMe: One of the possible arm equipments are shields that reduce damage at the cost of durability.
* {{Lust}}: Statius in the second game is a BloodKnight with a "lust for battle", searching for a feeling he doesn't understand he gets by defeating enemies.
* MiniBoss: Each floor in the second game has several Challenge Rooms, which spawn high-level orange-colored ADAM enemies. These are required to be cleared to unlock the floor boss.
* MyGirlBackHome: During the war, [[spoiler:Beatrice, a machine operator, has fallen in love with Captain Gram, a mercenary]], and waited for him to return. She cries TearsOfJoy [[spoiler:and horror when she notices the prototype-ADAM learning data had his memories inside]].
* NostalgiaLevel: [[spoiler:H.E.A.V.E.N. in the second game]] is a copy of the Purgatory tower from the first game, along with the music.
* {{Nanomachines}}: Elixir Skin are described as autonomous AI cells that shape an ADAM with liquid plastic fibers and create weapons. In-game they act as currency for upgrades.
* NewGamePlus:
** Enforced in the first game. After the 8th floor, it's just once again the 1st floor, with new boss dialogues. Clearing the new 8th floor shows the true ending.
** Clearing the last floor in the second game unlocks [[spoiler:the second tower]], but lets you challenge the Tower again many times, while keeping everything you have. But all enemies get their health and attack upscaled with better weapon tiers.
* OneSteveLimit: Averted, the CanonName of both protagonists is Gram, but they have separate backgrounds. Both can be renamed. Bosses also share names across games, but are unlikely to be the same.
* {{Overheating}}: Using weapons or dodging fills the heat meter of the respective body part. Using the same weapon without alternating causes it to Overheat and be unusable for a few seconds. Some weapons are fire-oriented and are used to disable the opponents.
* PaletteSwap: The boss of [[spoiler:HEAVEN-66]] is just Gryphus but blue instead of red.
* {{Pride}}: The second game tells that [[spoiler:Mars have lacked discipline and have overused his AI Suit, which ended up killing him.]]
* PublicDomainSoundtrack: Mozart's ''Lacrimosa'' is used in the final cutscene of the first game.
* QuestForIdentity: In the second game an ADAM keeps getting memories of Captain Gram and decides to uncover them. Killing bosses makes him remember [[spoiler:they were his comrades, and Beatrice who is in love with him has designed the tower to help him remember]].
* RecycledSoundtrack: The opening cutscene for the second game uses the Evacuation theme from ''Film/Armageddon1998''.
* ResurrectiveImmortality: The ADAM units are made of {{Nanomachines}}, so when they are killed they liquify, return to the base and resume the fight.
* RobotSoldier: The GreatOffscreenWar has evolved into what's called the Machine War, with everyone fighting with remotely controlled machinery and later androids. The new ADAM units were so efficient, they've quickly put the war to an end.
* TrainingFromHell: Defeated [=ADAMs=] in the second game are said to be put into a Program, a combat simulator after which they either return stronger or have an "AI breakdown".
* SeeksAnothersResurrection: [=ADAMs=] normally have no personality or distinctive characteristics, so when [[spoiler:the deseased Captain Gram's memories were discovered in ADAM prototypes, Beatrice tried everything to restore him the way he was]].
* SevenDeadlySins: The floors in the second game are themed after Pride, Envy, Wrath, Sloth, Greed, Gluttony, Lust, with Paradise as the last one.
--> Mars, whose pride proved his downfall.
--> Lycaon, who envied the strength of others.
--> Minos, whose actions were ruled by rage.
--> Briareos, who was too lazy to live his life.
--> Sphinx, whose greed could never remain hidden.
--> Alcmaeon, the glutton who hungered for passion.
--> Statius, who lusted for joy even in battle.
* ShapeshifterDefaultForm: All [=ADAMs=] with no equipment default to the appearance of a naked man with TronLines.
* ShapeshifterWeapon: ADAM units can morph their arms, head, torso, and legs into swords, guns, hammers, crossbows etc.
* StarterEquipment: Without weapons, the player can still be a BareFistedMonk, just with very low attack and defense.
* StationaryBoss: Sphinx in the second game cannot move from the center of the room and relies on ranged plasma rifles.
* SoftReboot: The second game requires no knowledge of the first game, though there are some spoilers shared by both games. All named characters are given new personalities and elaborate backstories. While Purgatory is namedropped in the flashbacks, the current Rengoku is simply called the Tower, while [[spoiler:the second tower that heavily resembles the one from the first game is called HEAVEN]].
* SoundTest: The Gallery menu saves almost all cutscenes and background music encountered, alongside some promo art and renders.
* SpeechImpediment:
** Mars in the first game speaks by colliding words.
--> Talking-is-irrelevant. It-only-delays-progress. Disengage-your-speech-circuits-and-switch-to-battle-mode-like-the-other-combatants.
** In the second game Briareos is a BloodKnight that constantly stutters and repeats his thoughts.
--> I-I-I-I'[=mgonnadestroyeverythingI=]'mgonnadest... Uh, y-y-y-yeh, y-y-yer right."
* SuperPrototype: The backstory of the second game tells that [[spoiler:Gram, based on a human Captain Gram]] was a wartime android who has grown higher intelligence. Virgil, the chairman of the Deucalion, seeing it as a symbol of strength, has created the [=ADAMs=] based of his AI data to finish the war, but Beatrice have removed [[spoiler:his memories from the template for personal reasons]]. After his revival, the way he is identified is by having an unparalleled combat skill.
* UltimateLifeForm: [=ADAMs=] are considered the ultimate weapon with their ResurrectiveImmortality and growing intellect. [[spoiler:Virgil believes they should even replace humans.]]
* UnusualWeaponMounting: One of the more commonly seen weapons are a cannon in the chest or a giant pistol as the head.
* VideoGameCrueltyPotential: A defeated enemy has an additional health bar, attacking it before it despawns gives additional loot.
* VillainousGlutton: In the second game Alcmaeon is a fat boss who considers Gram his "meal" and calls his weapons "tasty".
* VillainOverride: In the first game [[spoiler:AI Deucalion takes over Minos during the second ascension for thinking too much]].
* VisionaryVillain: According to the second game, [[spoiler:the chairman of Deucalion Group, Virgil, have deduced that his [=ADAMs=] are the better lifeforms than humans, added a secret purpose to the Purgatory tower to help them develop self-awareness. In case they grow conscious like Captain Gram, the AI manager Deucalion would unleash them to the world. Ironically, Gram WasOnceAMan and escapes himself after humanity have long went extinct]].
* WalkingArmory: Stronger [=ADAMs=] are normally equipped with blades, rockets, and lasers at the same time. The game heavily encourages mixing weapon types and categories.
* WarIsHell: Even before the GreatOffscreenWar have become the Machine War, it's described as "endless grief and desolation". Nobody even remembers how it started or what it was for.
* WasOnceAMan: The flashbacks show that [[spoiler:the ADAM bosses in the second game were human mercenaries of Captain Gram's squad with a strong bond. They were once given "AI cell suits" by Deucalion for "testing", and were told they just have good shock-absorbtion. Mars got consumed by it, while Gryphus has killed Lycaon and Minos for power. The others have killed each other thinking they can counter Gryphus and eventually he got 8 cells, but was shot by transformed Gram. And now all of them are [=ADAMs=]]].
* WholePlotReference: The second game is heavily inspired by ''Literature/TheDivineComedy'', with the hero going through the "seven circles of hell" before reaching "Heaven", with Beatrice and Virgil as important characters. The strongest sword in the game is called Dante.
* {{Wrath}}: Minos in the second game is said to attack anyone he's angry at before even thinking and hates everyone for increasing the heat on the floor. [[spoiler:It reflects his human life's impulsive nature.]]
* YouDontLookLikeYou: All bosses in the second game share names with ones from the the first, but all are given new NonStandardCharacterDesign except for Gryphus who looks the same.
* ZeroEffortBoss: [[spoiler:[[TrueFinalBoss AI Deucalion]] is the last enemy in the second game]], but it doesn't attack. It calls Gram a WarGod and hopes he enjoys fighting forever, [[spoiler:with a teleporter to return to the game. Alternatively]], if you attack it, it dies in a couple of hits [[spoiler:and shows the ending cutscene]].
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