A 2005 FirstPersonShooter developed for the Nintendo Gamecube by n-Space. ''Geist'' is the story of John Raimi, a scientist hired by a counter-terrorism unit to help them investigate a biochemical corporation. They have good reason to be suspicious. The Volks Corporation has apparently been developing chemical weaponry, according to information gathered by the unit's inside man (and Raimi's mentor). But even this is far from the truth, as one of the soldiers seemingly kills the rest of the team against his will, and Raimi awakens to discover that he is now a ghost, and the only way to survive and discover the truth is to possess others...

This game is hardly your stereotypical FPS. While the gameplay never leaves the first-person perspective except for cutscenes, the gameplay varies widely from sequence to sequence. Some areas demand standard shooting and platforming skills, while others take the form of puzzles and resource management. A playthrough can be found [[http://www.youtube.com/playlist?list=PLA27D35E9C3B1AAB1 here]].

Not to be confused with ''Anime/MDGeist'', which is a SoBadItsGood OVA from the 1980s. Also not to be confused with the TabletopGame/NewWorldOfDarkness game, ''[[TabletopGame/GeistTheSinEaters Geist: The Sin-Eaters]]''.

!!This game provides examples of:

* AffablyEvil: Most of Volk's staff appear to be nice people who genuinely care about each other.
--> Remember, Friday is Hawaiian shirt day!
* AirVentPassageway: You're a dog that appears to be a boxer at the time, and you still have to crouch to get through. No one notices barking or paws clicking.
* BadBoss: Rourke being cruel, dumb and neglectful seems to have missed out on all the damage you caused throughout the game according to a few security officers you can talk to.
* BedsheetGhost: Or rather, a ghost possessed bed sheet.
%%* BigBad: Alexander Volks.
* BodySurf: The central concept of the game.
* BossBonanza: In the final level, Raimi fights two giant statues, Alexander Volks and [[spoiler:the demon who is possessing him]]. One after another in a row.
* BottomlessMagazines: The turret guns and the prototype weapons in the main single player mode.
* BulletTime: Being a bodiless ghost naturally slows time down; there are also battlesuits that can temporarily produce the same effect.
* ConsoleCameo: There's a Gamecube inside one of the lockers in the Medical level.
* ConvectionSchmocvection: Averted, both with fire ''and'' with smoke.
%%* CreepyChild: Gigi.
* CutscenePowerToTheMax: Watch those jumps you cannot duplicate, watch those weapons do a lot less damage when you finally get to use them!
* DeadpanSnarker: Raimi is a HeroicMime, but descriptions of his surroundings, archived [[http://www.gamefaqs.com/gamecube/914965-geist/faqs/59187 here]], reveal that he makes some snide observations. "This is where all of the important faxes come to the morgue", "This [gurney in a morgue] must have been difficult to get down the stairs. At least the passengers don't mind the bumpy ride", "Thanks for the pants" [to a dead guard whose pants he stole] are the most notable.
* DeadToBeginWith: Well, after the first level.
* DeathIsASlapOnTheWrist: If the host Raimi is currently possessing has the life meter depleted, and is an expendable host, Raimi's soul simply leaves the body so he can look for another one. But if the deceased host is key for the mission, or no more hosts remain, then it's a definitive Game Over.
* DemonicInvaders: Behind your human antagonists is a demon and in fighting them you let more crossover. They have apparently invaded the world in the past too, based on the first one's dialog.
* EasterEgg: Part of the Medical level takes place in a women's locker room. Inside one of the lockers is [[Franchise/{{Metroid}} Samus Aran]]'s helmet.
* EleventhHourSuperpower: During the final boss fight, Raimi get the ability to fire energy bursts in his spirit form. Justified, as [[spoiler:he's fighting the demon possessing Volks in some kind of spiritual plane; obviously not bound by the rules of the real world.]]
* EscortMission: A bizarre one; you help a friend escape by possessing any and all useful objects in the vicinity, including the escape vehicle. Before that happens there's a more standard escort mission, but fortunately the unarmed Bryson is too weak to run out ahead of you and the enemies don't really focus on him.
* EvilDetectingDog Dogs can tell if you're possessing a soldier, and will bark. This sets off the alarm and causes every soldier nearby to start shooting at you immediately.
* FauxActionGirl: Anna is an average nurse who only turns into a gun-toting ActionGirl because you are possessing her at the time. After you leave her, she keeps the outfit and weapon, but not the competence.
* FirstPersonGhost: Perhaps because of the obvious pun, single player only partially uses the trope by containing a full model of your current form in the corner, to give you an idea of what your actions look like to anyone who may see you.
* GameplayRoulette: The game perpetually oscillates through first-person shooter, survival horror, puzzle and action-adventure. This is justified by the game's premise (spiritual possession), as the gameplay mechanics can change according to the current host character.
* GenderBender: You possess several women.
* GrandTheftMe: It reaches the point where ghosts try to kill you by inhabiting your body and killing yourself.
* HackedByAPirate: Ghost Raimi can possess a computer and cause it to flash the skull-and-crossbones, pretending to be a virus to scare a technician.
* HelmetsAreHardlyHeroic: Few named characters will be wearing any and none of them will be full faced.
* HeroicMime: Raimi is completely silent throughout, even when possessing humans and trying to convince a friend it's really him.
%%* HospitalHottie: Anna.
* InfernalParadise: The antagonist's plans for Earth.
* InformedAbility: Raimi's supposed to have knowledge on chemical and biological warfare. A scientist. But [[http://www.gamefaqs.com/gamecube/914965-geist/faqs/59187 descriptions]] have him looking at control panels and thinking "Hmm... looks complicated", and finding equations incomprehensible.
* ImmuneToBullets: Ghosts
* ImprovisedArmor: One monster covers itself in random bits of debris after its shell is broken.
* JustEatHim: One boss swallows one of your allies whole, but spits him back up later.
* JustifiedTutorial: A computer specifically designed to train new ghosts.
* LastNameBasis:
** No one but Bryson calls you John.
** Gigi ([[spoiler:and the Demon Lord]], for a brief moment at the beginning of Chapter 5) are the only two people who call Volks "Alexander". The former makes a little more sense, given that [[spoiler: he's her brother.]]
* LivingStatue: ''Two'' serve as the last boss before the fights with Volks [[spoiler: and the Demon Lord.]]
* TheManBehindTheMan: [[spoiler:Volks' Demon]].
* TheMindIsAPlaythingOfTheBody: Possessing some characters results in subconscious desires and aversions that the player doesn't share.
* MiniGame: Among other examples, one area can only be passed after a literally riveting action sequence. Or one could just [[VideoGameCrueltyPotential kill all the workers in the area]].
* NiceJobBreakingItHero: Trying to keep Bryson from being hit by the separation procedure and possibly driven mad, Raimi destroys the machinery that's keeping the rift stable. This does result in Bryson being taken down and sent to the medical wing, but it also means that a huge incorporeal demon can pass through and start making everything worse. Though it can't be solely blamed on Raimi - after the machinery was destroyed, one of the technicians insisted that the rift be closed down lest something escape, but [[TheDragon Rourke]] orders it forced wide open, and when he gets argued with, he gives the engineer a present from his gun to the head to convince the other engineer to open it.
* NoSidepathsNoExplorationNoFreedom: For a game with a fundamental point of scaring people to control random guards, there is only one direction you can ever go in any given situation whatsoever, going back is never an option, as the game will never let you reopen some doors, not that there's a thing to find besides multiplayer content and life upgrades (that come with extra story details) anyways.
* NotQuiteFlight: Your ghost form can float a little but not really fly until the end of the game.
* PlayingTennisWithTheBoss: In an odd variant, you possess his missiles and guide them back manually, but this is optional.
* {{Railroading}}: Generally if you find an item or person that you can possess, the game is designed so that you ''have'' to possess it. Many of the game's puzzles can be solved simply by looking around for what you are allowed to possess.
* RecurringBoss: The first boss will be the one you see the most.
* ReplayMode: The game allows the player to replay the chapters of the game after its completion.
* RunDontWalk: You probably will not be releasing that L button very much.
* ShoutOut: The surname of John ''Raimi'' is borrowed from that of famed director, writer and actor Creator/SamRaimi.
* SpiritAdvisor: Gigi during the first six chapters of the game. Afterwards, when Raimi approaches the darker corners of Volks Corp, she's unable to go any further with him.
* SplashDamage: In multiplayer, using this on themselves is a common tactic hosts use to get rid of ghosts.
* StockAnimalDiet: Rats and cheese.
* TheSocialDarwinist: Volk's demon, to the point it is disgusted by the idea of peaceful resolution.
* UnexpectedGameplayChange: Repeatedly, up to and including a space shooter.
* VeryHighVelocityRounds: {{Averted|Trope}} for the player, too bad for you. Your enemies only use them in one section of story mode though.
* VideogameFlamethrowersSuck: As usual it has a good damage output but a pathetic range. It does have a longer range secondary fire, that is shared with two other weapons found in the same area. Better than most video game flamethrowers but still much worse than a real one.
* VoiceOfTheLegion: Volks gets a bit of this in his speech at the end of Chapter 7.
* WhyDidItHaveToBeSnakes: Half of a level is spent setting up a situation where you can take advantage of TheDragon's fear of dogs.