History Main / MentalWorld

* ''VideoGame/EarthBound'' has Magicant, Ness's Mental World which he is [[JourneyToTheCenterOfTheMind forced to travel into]] in order to confront his inner demons.

* ''Comedity'' sometimes showed the various sides of Garth's personality sitting around a conference table discussing what he should do next. It got particularly interesting when Karen fell through a plot hole *into* this mental world.

* In the ''AudioPlay/BigFinishDoctorWho'' story, "[[Recap/BigFinishDoctorWho063Caerdroia Caerdroia]]", the villain, Kro'ka, uses a MindProbe to enter the the Doctor's mind, hoping to interrogate him. But he quickly finds it so scary and chaotic a place with the Doctor acting as a KillerGameMaster that he quickly wants to leave.

* In ''VideoGame/ShadowHearts I'' and ''II'', Yuri's Mental World is a [[spoiler:graveyard, where monsters embodying his flaws and fears roam, waiting for him to fuse with their souls]]. It has an actual influence on the real world, as [[spoiler:it finally digests Alice's soul]].

** In ''LightNovel/FateZero'', Iskander, a.k.a. Alexander the Great, possesses the "shared" Reality Marble ''Ionioi Hetairoi'' ("Army of the King"), which recreates the battlefields of his past and resurrects his army, many members of which have become Epic Spirits themselves, but come at his call even after death. It is this display of kingship that finally forces Gilgamesh to recognize him as a WorthyOpponent.

* The 1999 Christian ReligiousEdutainment game ''Saints Of Virtue'' takes place entirely within the mind of a believer, with various sins being represented as physical locations and aggressive UncannyValley masks. Some virtue are also represented as places.

* This can also lead to WorldBuilding and other creative stuff.

* ''Series/{{Farscape}}''. Since the implantation of [[NotSoImaginaryFriend Harvey]], neural clone of Scorpius, Crichton had a shipload of mental world scenes- some based on places taken directly from his memory, others completely fantastical. But the most memorable was the [[WesternAnimation/LooneyTunes Road Runner]] parody cartoon.

* Happens quite a bit in the ''Series/{{Battlestar Galactica|2003}}'' finale, as it's shared by several characters. What makes it interesting is that becomes a waking hallucination for everybody involved.
* In ''Series/TheOuterLimits1995'' episode "Mind Over Matter", a computer technician can use a specialized mainframe to enter the mental world of people trapped in comas. He uses this to try to save his love interest. Unfortunately, the protagonist forgot AIIsACrapshoot with unusual results.

* In ''Machinima/RedVsBlue'', [[TheDitz Caboose]] is frequently subjected to mental invasion. During these times, his mind is depicted as a vast expanse of pillars populated by poor caricatures of the people he knows. Killing people inside of there (temporarily) destroys his memories of that person's real-life counterpart.

* ''Manga/YuGiOh'' features this in the Millenium Puzzle, where the mind of Yugi is separated into two worlds. One is like a toyroom, to symbolize Yugi's naivete and innocence, as well as his love for games. The other of which is a mishmash twist of traps, mazes, and planes that defy the laws of physics to symbolize the depths of Atem's soul. To note though, if you fall to one of Atem's traps in the area, even if he did not want to kill you, you can still end up brain dead.

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* ''Roleplay/DeptHeavenApocrypha'' featured one of these during its infamous [[DevelopmentHell phantasmagoria event]], wherein a MagicMisfire by [[TheWoobie Nessiah]] accidentally trapped several other students in a mental world created from his most horrific memories. Currently, [[spoiler:Fia]] may have locked herself into one, but we're not sure yet.
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A Mental World is any world that exists inside a person's mind (or heart, soul, whatever, but not their [[FantasticVoyagePlot physical body]]). Similar to DreamLand and {{Cyberspace}}, a Mental World [[RealityIsOutToLunch does not follow the regular laws of physics]], and may ignore or respond badly to characters trying to use logic or force. This world is usually entered by some type of {{telepathy}}, either magical or technological; if the character whose mind contains the Mental World is sleeping or unconscious, then their individual dreamworld may be physically attached to a larger DreamLand or collective unconscious, which makes it enterable by other dreaming or meditating people.

[[caption-width-right:235:What else could the mind of a DoubleReverseQuadrupleAgent with ChronicBackstabbingDisorder possibly look like?]]

* An early episode of ''WesternAnimation/TeenTitans'' had Beast Boy and Cyborg fall through a magic mirror of Raven's and wind up in a bizarre otherworldly landscape, which turns out to be Raven's own mind. They encounter spooky hazards and the personifications of Raven's suppressed emotions, including a depiction of her father full of {{foreshadowing}} for later seasons.

* Seen in the 90s ''WesternAnimation/XMen'' episode "Xavier Remembers" when The Professor enters his own mind and fights the villainous Shadow King, winner-take-all--the prize is control of Charles' body. The astral plane is of the "giant space void with tiny asteroids of sanity" variety.

[[caption-width-right:235:[[VideoGame/MetalGear Revolver Ocelot's]] mind. [[note]]What else could the mind of a DoubleReverseQuadrupleAgent with ChronicBackstabbingDisorder possibly look like?[[/note]]]]

* The adult BaraGenre game ''Strange Flesh'' has you, The Bartender, [[JourneyToTheCenterOfTheMind travel into the mind]] of Joe in order to help him with his repressed issues; Joe's mental landscape has five levels: [[VideoGameTutorial Surface Level]], Office of Repression, Streets of Liberation, Garden of Vice, Den of Lust, and Innermost Desires.

* In ''Fanfic/ChildOfTheStorm'':

* In ''TroperWorks/HumanOfTheOtherSide'', the character Raim Hanta's mind has reproduced several location of Japan he has visited. However, inside of it, sometimes a weird crossbreed between TheHeartless and light doses of PsychologicalHorror, appear in order to kill him and/or screw his mind. The laws of physics there are fairly normal, but then he figures out he can walk over the surface of buildings. Oh, and there's a bridge which [[Anime/TengenToppaGurrenLagann spirals up to the heavens]]. Damn his mind is messed up.

* ''ComicBook/TheTransformers'': Used more frequently than you would expect from a series about robots. First used in Resurrection!, although this is influenced by Limbo beings. Next utilised in Salvage, where Megatron engages in (what should have been) his final battle against Straxus.

* In ''Manga/{{Naruto}}'', the main character oftentimes finds himself inside of his own mind, face-to-face with the [[SealedEvilInACan Kyuubi]] for which his body serves as the container.

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* ''Roleplay/DeptHeavenApocrypha'' featured one of these during its infamous [[DevelopmentHell phantasmagoria event]], wherein a MagicMisfire by [[TheWoobie Nessiah]] accidentally trapped several other students in a mental world created from his most horrific memories. Currently, [[spoiler:Fia]] may have locked herself into one, but we're not sure yet.

* At the very end of the series of ''WesternAnimation/LupinIIITheItalianAdventure'', Lupin enters the mind of Rebecca to prevent [[spoiler: her mind being assimilated by Leonardo Da Vinci.]] [[spoiler: Da Vinci]] is able to manipulate and distort her mind through his paintings, creating deserts, artic landscapes, floating islands and a creepy castle..thing that holds and absorbs all her memories.
** What makes it worse is that '''every''' single Italian is trapped alone in a similar dream with [[spoiler: Da Vinci]], and if they don't defeat him in a show of their best ability e.g swordplay, they become assimilated into his subconscious.

** Mages can go further beyond the mere subconscious and into a person's Oneiros (one of the three Astral Planes), which is their own soulscape. It contains the AnthropomorphicPersonification of their desire for self-improvement, their darker urges, their fears, and their Flaws and Derangements (if they have any). It also contains the sum total of all a person's knowledge and experience, albeit shrouded in metaphor and symbolism (or in the case of memories, the subjectivity of the experience). It's possible to travel even deeper into the Tenemos, which is the [[DreamWorld collective unconscious of humanity]].

* ''VideoGame/AmericanMcGeesAlice'' has Alice fighting in [[DreamWorld Wonderland]] - a world that represents her mind. Given that at the time Alice is in an asylum, Wonderland is virtually a nightmare, twisted by her insanity and depression.

** The Djinn in the series grant wishes by putting people in a mental world that creates what the person thinks would have happened if they got that wish. Since Dean wishes his mother had never been killed, he wakes up in a world where he lives an ordinary life as a mechanic and has a loving girlfriend but is estranged from Sam. [[Spoiler: He eventually realizes it's a mental world and kills himself in the dream so he can wake up.]]