->''"Christopher thinks the world has ended.''\\
''His neurologist is starting to believe he may be right."''

''Korsakovia'' is a game mod for the game ''VideoGame/HalfLife2'' made by Creator/TheChineseRoom, maker of ''VideoGame/DearEsther''.

In the St. Clements Neurological Clinic is a man named Christopher, who suffers from [[http://en.wikipedia.org/wiki/Korsakoff%27s_syndrome Korsakoff's psychosis]], a mental disorder that has caused him to fabricate false memories while unable to form new ones. He also had a long history of self-harm, and his latest episode has left him blind and burnt. In the nightmare world he has constructed, the world has come to an end, and he is under attack by a race of monsters called "The Collectors". His neurologist, Dr. Grayson, attempts to help Christopher come to grips with reality, but as time goes on and Christopher delve deeper into his lucid fantasies, Dr. Grayson finds herself being dragged down with him...

... at least, [[MindScrew that's ONE way of]] [[EpilepticTrees looking at it.]]

Download it for free [[http://www.moddb.com/mods/korsakovia here]]. (Requires Orange Box version of ''Half-Life 2'' to play; will not work with original retail ''Half-Life 2''.)

!!''Korsakovia'' features examples of the following tropes:

* AbandonedHospital: The first level. It's a {{Retraux}} of how Christopher perceives the hospital he is in, with very minimal lighting.
* ApocalypticLog: Christopher believes the world has ended, and recounts the days before and after it had happened. [[spoiler: Whether or not it actually DID happen is open for interpretation.]]
* ArcWords: Also arc themes and arc objects. {{TV}}, [[EyeScream eyes]], sun, TheEndOfTheWorldAsWeKnowIt,copper wire, [[EldritchAbomination Collectors]], hands. All played to extremely horrifying extremes.
* AscendedFridgeHorror: Anywhere you see the word "{{horror}}" on this page. TONS of it, all in one short game.
* BattleInTheCenterOfTheMind: The Game. Trying to figure what's going on in the game while knowing that you're playing as a person with Korsakoff's Syndrome will get you nowhere. AT ALL.
* BoobyTrap: One way to deal with the Collectors is to lure them into a room (or even a storage crate in the second chapter), then quickly run out and shut the door behind you.
* CosmicHorrorStory: If you believe that Christopher is right, it becomes this.
* DarkIsNotEvil: The only enemies in the game are these faceless clouds of black smoke called "The Collectors". Though they attack you, Christopher insists that they are only doing what has to be done.
-->'''Christopher''':I guess that none of us are supposed to be here now, now we're all dead, they are just collecting it all up. You can't blame them for that.
* EldritchAbomination: The Collectors are simply large, featureless clouds of black smoke. [[NotMakingThisUpDisclaimer Seriously.]]
* EndOfTheWorldAsWeKnowIt
* EyeScream[=/=]FirstEpisodeSpoiler: [[spoiler:Christopher ''gouged out his eyes'',]] which is why the game has very minimal lighting.
* GainaxEnding: So we've got [[spoiler: Dr. Grayson rambling about a needle, Christopher talking about hiding his eyes in the Sun]] and then it ends with someone (Grayson again?) [[spoiler: shouting "WAKE UP!"]]. And that's it. Borders on NoEnding.
* {{HUD}}: Subverted- there is no health meter or sprint meter onscreen, probably to make the game more frantic and realistic. Note however that yes, you ''can'' die.
** As noted below, the increasing number of cracks at the edges of the screen function as a health meter. You might not figure this out until it's too late, though.
* HearingVoices: The entire mod is narrated by disembodied voices. The characters themselves are never seen (unless you count your own hand holding the crowbar).
* JumpScare: Since the player doesn't know ''what'' the Collectors are, the first one is this. [[spoiler:After you come back from the lower level in the first map, the door across the hallway will ''explode''.]]
* MakesJustAsMuchSenseInContext
* MeaningfulName: The game's name is derived from [[http://en.wikipedia.org/wiki/Korsakoff%27s_syndrome Korsakoff's Syndrome]], which is what Christopher has. In short, the game plays through ''his'' perceived ideas while under the effects of the psychosis.
* MindScrew: The game starts to make less and less sense as you traverse through the mind of Christopher. Then the TV's start to show up. And then...well...EndOfTheWorldAsWeKnowIt??
* MindRape: Due to the nature of Korsakoff's Syndrome.
* OhCrap: You thought Christopher was simply insane and that this whole idea about the world having ended was just a delusion, and Dr. Grayson was simply tending to him. Then the title of chapter 3 reads: [[spoiler: The Assimilation of Dr. Grayson]].
** Alternatively, this is simply [[spoiler: the assimilation of Dr. Grayson into Christopher's delusions]].
* PaintingTheMedium: Instead of a health meter, ''your screen'' becomes cracked.
* PersonalHorror: The game is [[ThroughTheEyesOfMadness focused around the player's internal psychosis]] and resulting [[EndOfTheWorldAsWeKnowIt beliefs]].
* PlatformHell: Since you [[FirstPersonGhost can't see your feet]], a lot of the platforming can frustrating.
* PsychologicalHorror: A MindScrew CosmicHorrorStory with a lot of SurrealHorror does [[MindRape a lot]] to the psyche. Also literal, since the player character [[ThroughTheEyesOfMadness has Korsakoff's syndrome]].
* ReligiousHorror: Christopher's [[spoiler: and, later, Dr. Grayson's]] psychotic ramblings resemble this.
* RoomFullOfCrazy: Well, his ''mind'' is acting even more delusional...
* SelfInflictedHell: It's implied that Christopher brought this whole delusion on himself [[spoiler: after wrapping his hands in copper wire and punching them through his television screen.]]
* SnowyScreenOfDeath: Quite literally: one part of the level has you jumping between floating platforms, each with a pair of floating television sets spinning around between them with a deadly electric arc between them.
* SurrealHorror: If Creator/DavidLynch or Creator/StanleyKubrick made a video game, this would be it.
* WithThisHerring: Your one and only weapon in the game is a crowbar, and it's not a very good one.
* WhatCouldHaveBeen: Originally, the plot was to have been about an actual apocalypse, with the Collectors coming from television screens and inflicting Korsakoff's Syndrome on viewers, trapping them in a Hell like what's in the final game.