History VideoGame / FinalDoom

* HundredPercentCompletion: It's technically impossible to collect 100% items on [=MAP28=] of ''The Plutonia Experiment'' in single player because of the presence of two Computer Area Maps, which you cannot collect if you already have one (Co-op doesn't have this problem if another player takes the 2nd Computer Area Map).

On January 9, 2020, both halves of ''Final Doom'' were re-released as free add-ons at the launch of the curated add-ons feature for the UsefuMediaNotes/{{Unity}} ports of ''Doom'' and ''Doom II''.

Both [=WADs=], while perfectly capable of being loaded as [=PWADs=] for Doom II using the latter's [=IWAD=] file, are [=IWADs=] in their own right and thus do not in fact require DOOM II for one to run them. Of course, those who are unfamiliar with DOOM II are likely to find these WADs back-breakingly difficult.

A UsefulNotes/PlayStation port that combined the games into one and included maps from the ''Master Levels of Doom II'' was released later that same year. This port removed most of the levels from the combined games (especially on the Plutonia end, where ''only 6'' of its 32 maps were included), as well as the Arch-Vile and functionally the Spider Mastermind (the latter still exists in the game data, just going unused in any of the included maps), in addition to reducing the difficulty significantly. The traditional rock soundtrack was also replaced with more ambient pieces by composer Aubrey Hodges that gave the game a more sinister atmosphere, and included the redone sound effects and colored lighting from the Ultimate Doom + Doom II Playstation port.

On January 9, 2020, both halves of ''Final Doom'' were re-released as free add-ons at the launch of the curated add-ons feature for the UsefulNotes/{{Unity}} ports of ''Doom'' and ''Doom II''.

Both [=WADs=], while perfectly capable of being loaded as [=PWADs=] for Doom II using the latter's [=IWAD=] file, are [=IWADs=] in their own right and thus do not in fact require DOOM II for one to run them. Of course, [[NintendoHard those who are unfamiliar with DOOM II are likely to find these WADs back-breakingly difficult.]]

* NintendoHard: ''The Plutonia Experiment'' is significantly harder than the previous games in the ''Franchise/{{Doom}}'' franchise. Much of the difficulty is from the placement of monsters like the Chaingunner, making {{hitscan}} damage a frequent nuisance throughout the mission pack. EliteMooks are also much more common than ''Doom II'', especially Revenants and inconveniently-positioned Arch-Viles, who are two very damaging monsters if they actually hit you. TNT: Evilution is nothing to scoff at either, and [[ExaggeratedTrope becomes downright diabolical on the ''Nightmare!'' difficulty, with only one person (ZeroMaster) having ever completed a no-death run of the WAD without saving on such a difficulty.]]

** Level 24: "The Final Frontier" and Level 27: "Anti-Crist" are both very similar in theme to Level 29: "The Living End" in ''VideoGame/DoomII'' with a huge underground cavern that features side chambers up above a vast lake of hazardous liquid. Like their inspiration, both levels climax with a boss monster encounter, featuring a Cyberdemon and Spider Mastermind respectively.

* NostalgiaLevel: Level 18: "Neurosphere" pays homage to Level 14: "The Inmost Dens" from ''VideoGame/DoomII''. The concept is castle-like masonry structures built over moats of liquid, with wood-metal doors around.

* {{Cliffhanger}}: The ending for ''TNT: Evilution''. [[spoiler: After you kill the Demon Spitter (another Icon Of Sin) the text crawl describes the sky turning from red to blue and all the monster corpses disappearing, implying you've been teleported back to Earth. The text then says a blue glow is coming from the remains of the Spitter and you approach]]... only to abruptly cut to the same "monster roll-call" that was at the end of ''Doom II'' and end with no explanation as to what would happen. ''Plutonia'' doesn't continue that story either, and later ''Doom'' games [[CanonDiscontinuity don't reference either at all]], so what that was supposed to be will be a mystery for the ages. Unless you take the FanSequel ''[[GameMod TNT: Revilution]]'' to be canon in this branch of the ''Doom'' timeline.

* NintendoHard: ''The Plutonia Experiment'' is significantly harder than the previous games in the ''Franchise/{{Doom}}'' franchise. Much of the difficulty is from the placement of monsters like the Chaingunner, making {{hitscan}} damage a frequent nuisance throughout the mission pack. EliteMooks are also much more common than ''Doom II'', especially Revenants and inconveniently-positioned Arch-Viles, who are two very damaging monsters if they actually hit you. TNT: Evilution is nothing to scoff at either, and [[ExaggeratedTrope becomes downright diabolical on the ''Nightmare!'' difficulty, with only one person (ZeroMaster) completing a no-death run of the WAD without saving on such a difficulty.]]

Both WADs, while perfectly capable of being loaded as PWADs for Doom II using the latter's IWAD file, are IWADs in their own right and thus do not in fact require DOOM II for one to run them. Of course, [[NintendoHard those who are unfamiliar with DOOM II are likely to find these WADs back-breakingly difficult.]]

* {{Cliffhanger}}: The ending for ''TNT: Evilution''. [[spoiler: After you kill the Demon Spitter (another Icon Of Sin) the text crawl describes the sky turning from red to blue and all the monster corpses disappearing, implying you've been teleported back to Earth. The text then says a blue glow is coming from the remains of the Spitter and you approach]]... only to abruptly cut to the same "monster roll-call" that was at the end of ''Doom II'' and end with no explanation as to what would happen. ''Plutonia'' doesn't continue that story either, and later ''Doom'' games [[CanonDiscontinuity don't reference either at all]], so what that was supposed to be will be a mystery for the ages.

* MissionPackSequel: ''Final Doom'' is this to ''Doom II'' -- both IWADs (''TNT: Evilution'' and ''The Plutonia Experiment'') qualify - in fact, ''TNT'' was supposed to just be a regular free PWAD for ''Doom II'' before a publishing deal was struck at nearly the last minute. This is notable as ''Doom II'' was itself essentially a mission pack sequel to the original ''Doom I''.

* NintendoHard: ''The Plutonia Experiment'' is significantly harder than the previous games in the ''Franchise/{{Doom}}'' franchise. Much of the difficulty is from the placement of monsters like the Chaingunner, making {{hitscan}} damage a frequent nuisance throughout the mission pack. EliteMooks are also much more common than ''Doom II'', especially Revenants and inconveniently-positioned Arch-Viles, who are two very damaging monsters if they actually hit you.