->''"Boy, have we got a vacation for you!"''

''Westworld'' is a 1973 science fiction thriller film written and directed by Creator/MichaelCrichton.

[[TwentyMinutesIntoTheFuture In the near future]], Delos is an expensive[[note]]$1000 a day in 1973, equivalent to about $5525 a day in 2015[[/note]] adult amusement resort offering simulations of TheWildWest, [[TheMiddleAges Medieval Britain]], and {{Ancient Rome}}. Each park has a population of humanoid [[DeceptivelyHumanRobots robots]], with whom visitors can interact however they wish. As a part of the Delos experience, one can fight with them, seduce them, and even kill them. After all, the robots are programmed not to feel pain or fight back, and the weapons provided only work on machines. [[BlatantLies They're harmless.]]

Two friends, John Blane (James Brolin) and Peter Martin (Richard Benjamin), arrive in Delos to get away from their busy lives. They head into West World, where John has been many times before, to have fun and act out various Western-themed scenarios. In particular, the mousy Peter [[ARealManIsAKiller earns his manhood]] by defeating the local gunslinger robot (Creator/YulBrynner) in a duel. In the middle of the night, the robots are rounded up and sent in for repairs, ready for the next day's events.

However, the technicians running the park are having problems. The robots break down faster than expected, the memory wipes are less effective, and they begin to resist the visitor's demands. [[HolodeckMalfunction It is speculated that a computer virus has infected the machines, one that soon causes them to murder humans.]] Alarmed, the head engineer orders everything shut down immediately, but this only results in suffocating everyone in the control room to death. With the machines running amok, John and Peter discover the gunslinger has come after them, looking for revenge...

A sequel, 1976's ''Futureworld'', removes the original's {{giallo}} influences, being more akin to a sociopolitical thriller. The Delos resort has been revamped and re-opened, and a pair of {{Intrepid Reporter}}s (Peter Fonda and Blythe Danner) are invited to preview the park's attractions (including a new theme park, [[TitleDrop Futureworld]]), but soon learn that Delos' backers have much more sinister plans for their improved robots... Notably, Yul Brynner's "Gunslinger" shows up in ''Futureworld'', but only in a DreamSequence and having absolutely no logical connection with the original character. Both movies were followed up by a ''very'' short-lived television series, ''Beyond Westworld''. In the series, set after the first movie, with John Moore (the head of security for Delos) and agent Pamela Williams sent after mad scientist Roger Quaid, who aims to uses the androids to take over the world.

A [[Series/{{Westworld}} television series adaptation]] of the movie is premiered on Creator/{{HBO}} in 2016, co-created by Jonathan Nolan (Creator/ChristopherNolan's brother), executive-produced by Creator/JJAbrams, and starring Creator/AnthonyHopkins, Creator/EdHarris, Creator/EvanRachelWood, Creator/JamesMarsden, and Creator/ThandieNewton.

!!This work contains examples of:

* AbsoluteCleavage: Daphne, the sexy serving-maid who refuses the Medieval Knight's advances after drawing his attention with this.
* AIIsACrapshoot: This movie was made long before the idea of a "computer virus" entered popular knowledge, yet they do refer to it as a "disease."
* AmusementParkOfDoom: Delos resort descends into one.
* AndYouThoughtItWasAGame: The first two victims in Westworld assume the androids will let them win their duels as they have been programmed to do.
* ArtisticLicenseGunSafety: Averted, the guns the guests (and presumably the robots) use have a sensor so you can't kill anything "warm," only something cold, like a machine. One of the guests actually tries playing quick draw with his gun, and shoots out the mirror. The book of the movie has a robot removing the sensor from its gun, something the movie missed explaining, after it takes the trouble to explain the guns have heat sensors.
* BaldOfEvil: Yul Brynner as the Gunslinger.
* BarBrawl: John and Peter participate in a simulated one. It involves lots of broken [[GrievousBottleyHarm bottles]] and [[ChairmanOfTheBrawl chairs]].
* BigDoor: In ''Futureworld''. In a scene with a rocket launch there was a giant circular door, as seen here and here. That door has appeared in other movies as well.
* BlindedByTheLight: The implacable robot gunslinger stalking Peter Martin has infra-red vision, so Peter hides behind the HollywoodTorches in Medieval World.
* BorrowedBiometricBypass: A robotic version appeared in ''Futureworld''. A door has a device that scans the retinas of anyone trying to get in. To pass, you must have a pattern that only robots possess. The heroes deactivate a robot and rip off its face, then use the face (and its eyes) to fool the device.
* BottomlessMagazines: The Gunslinger appears to be equipped with these.
* BrokenRecord / ElectronicSpeechImpediment: This was the cover copy for the published script for the movie: "Nothing can possibly go wrong ... go wrong ... go wrong ... go wrong ... "
* TheCameo: Yul Brynner in ''Futureworld''.
* CattlePunk: An inversion. Late 20th century robotic and ArtificialIntelligence technology were used to re-create the Wild West for entertainment.
* CueTheSun: In the movie the technicians watch for sunrise and cue all the robots to start up at the instant where the sun rises above the horizon. A western town is frozen in mid movement, then everything starts up when the sun rises.
* {{Determinator}}: Years before [[Film/TheTerminator Arnold codified it]], Yul Brynner gave us the original unstoppable killing machine...
* DeadpanSnarker: The Gunslinger before his rampage. He was meant to be snarky in order to goad tourists into gunfights.
* DiagonalBilling: Yul Brynner at lower left, Richard Benjamin at upper right.
* DownerEnding: Technically it's a BittersweetEnding in that [[spoiler:Peter makes it out alive]], but it's presented on such a dour note that it might as well be this. [[spoiler:Most of the guests and technicians in Delos are dead at the end, and most the robots 'died' when their batteries ran out. Peter finds a woman chained and begging for help, and tries to offer her water... only to short her circuits. He doesn't even get the satisfaction of saving someone else's life, [[EverybodysDeadDave and is pretty much the last survivor we know of at the end of the film.]]]]
* DreamSequence: In the sequel. Provides an excuse to revisit the Gunslinger character.
* DrinkOrder: They don't serve vodka martinis (with or without a twist of lemon) in Westworld, dummy.
* EverybodysDeadDave: Only [[spoiler:Peter survives, and all other on-screen characters are confirmed or most likely dead.]]
* EvilInc: Delos has become this in ''Futureworld''.
* EvilSoundsDeep: The Gunslinger.
* FailsafeFailure: When the staff perform an emergency shutdown on the park, all they accomplish is locking themselves in the control room and suffocating since the doors and ventilation system need power to operate and don't have a backup power source. This fails to stop the rogue robots, since they're powered by batteries.
* GirlyRun: Peter. Not sure whether this is Richard Benjamin's natural gait or a deliberate way of invoking the character's effete, citified nature in contrast with the Gunslinger.
* GoneHorriblyRight: Turns out the new infrared tracking suite that the Gunslinger was upgraded with works excellently - too bad the safeties are long turned off when he starts using it.
* GoneHorriblyWrong: The robots aren't supposed to be able to hurt guests.
* HeroTrackingFailure: Happens when the Gunslinger tries to shoot Peter with a rifle.
* HolodeckMalfunction: Of the robot rebellion variety.
* HumansAreTheRealMonsters: Played with. Near the end of the film, Peter finds a woman in the dungeons of Medieval World. He initially believes her to be a fellow guest left chained up when the robots ran amok, either as part of a capture-and-escape fantasy like the jailbreak in West World or else maybe as some kind of kinky bondage game. Then he finds out she's a robot when a drink of water shorts her out.
* ImpaledWithExtremePrejudice: [[spoiler:The fate of the guest who played a medieval knight. Also, most of those who were killed by robots in the AncientRome section of Delos.]]
* [[ImplacableMan Implacable Robot]]: The Gunslinger is more-or-less the predecessor to Film/TheTerminator in all but name.
* IronicEcho: "Boy, have we got a vacation for you... for you... for you..."
* {{Jerkass}}: The Gunslinger starts out this way as he is programed to goad anyone near him into a duel.
* KillAllHumans: [[spoiler: The Delos Corporation's endgame in ''Futureworld''.]]
* KillItWithFire: After acid didn't work so well.
* LastNoteNightmare: The closing credits feature jocular western music that eventually fades into this.
* MadeOfIron: [[{{Pun}} The robots, of course.]] '''Slightly''' less so in ''Futureworld''.
* MalevolentArchitecture / NoOshaCompliance: The main control room has no emergency exit, and shutting down the power means they can't open the doors at all. The room is also airtight for some reason, with air being pumped in through vents. This essentially turns the function of shutting down power from that room into a suicide button.
* MohsScaleOfViolenceHardness: ''Westworld'' gets a pretty light 7, due to some of the blood-gushing squibs on [[spoiler:the Gunslinger (Yul Brynner)]].
* {{Narm}}: InUniverse. The more silly "performances" of the tourists at Delos certainly qualify. [[JustifiedTrope Justified]] considering they aren't trained actors and are basically hamming it up for fun to emulate what they've seen on TV and film. The robots within are also deliberately over-the-top personas and cliches as the setting dictates. For some viewers all of this can become a case of NarmCharm as it adds a certain authenticity to what is essentially an adult theme park. Peter lampshades this to an extent when he talks about feeling silly but he eventually starts to enjoy it. (Until things go wrong, that is...)
* NoNewFashionsInTheFuture: Does this take place in 1974, or what?
* NoWaterproofingInTheFuture: [[FridgeLogic But acid? That's okay.]]
** Note that they actually show robots drinking during the bar fight scene.
* [[OhCrap Oh My God!]]: Peter's reaction when the Gunslinger [[spoiler:fatally shoots John]].
* PopCulturalOsmosis: The ''[[Series/TheSimpsons Simpsons]]'' episode "Itchy & Scratchy Land" is far more well-known by young people than this film, which it parodies. That is, when they don't assume it's a parody of Crichton's ''other'' story [[Literature/JurassicPark about a theme park breaking down]], only with robots instead of dinosaurs.
* RedRightHand: Robots can be identified by the palms of their hands.
* ReptilesAreAbhorrent: One of the first indications that things are beginning to go seriously haywire at Delos comes when John is "bitten" by a robotic rattlesnake.
* RidiculouslyHumanRobots: The only dead giveaway between a real human and a robot is that the scientists haven't programmed particularly good hands for the machines.
* RoboCam: The first use of CGI in a film is the Gunslinger's [[TechnologyMarchesOn comically low-resolution]] POV.
* RobotBuddy: Clark, in ''Futureworld''.
* RuleOfThree: The Gunslinger attacks three times, the third becoming deadly.
* ScaryShinyGlasses: Worn by the hovercraft pilot in the beginning.
* ScrewThisImOuttaHere: The repair technician Peter encounters while fleeing from the Gunslinger. [[spoiler:Who gets killed anyway.]]
* ShoutOut: Yul Brynner's Gunslinger character wears the same outfit as Brynner's character Chris from ''Film/TheMagnificentSeven''. It is possible that in-universe, the Gunslinger was specifically modeled after Chris from that film.
* SpiritualSuccessor: Crichton's ''Literature/JurassicPark'' takes the same premise and puts [[RecycledInSpace dinosaurs in place of robots]].
* SexBot: Pretty much all the female robots at Delos.
** Heavily implied by the interview with a female park-goer that just came back from Roman World that the men are equally well suited for this task too.
* SwordFight: One of the guests dies during one in the Medieval World.
* TemptingFate: "Nothing can go wrong."
* TurnedAgainstTheirMasters: The robots, particularly the Gunslinger.
* UncannyValley: In-universe, the robots' hands (their faces are actually realistic, since they're played by real actors).
* UnusualUserInterface: Shifting geometric shapes appear on at least half of the monitors in the control room. However, they are all either in empty terminals or the technicians aren't doing anything with them, so it might just be a nifty screensaver.
* VitriolicBestBuds: Peter and John are a mild version of this.
* WhatHappenedToTheMouse: The fat man with the glasses who became the new sheriff of Westworld (after the previous, robotic one was shot down by John) is never seen again after the bar brawl sequence. [[spoiler:Though given his clumsiness and ''complete'' lack of physical prowess, it's safe to assume that he was killed just like the rest of the guests.]]
* WhatTheHellIsThatAccent: Speaking of Dick Van Patten, something very weird was going on with his voice. He only really has one speaking line in the film, and for some reason, he either did it trying to sound even nerdier than he sounded naturally or they overdubbed his lines with someone else's voice.
* YeGoodeOldeDays: All three Worlds. Justified since it is, quite literally, {{The Theme Park Version}} of these eras.
* {{Zeerust}}: The control room. They had ''control tapes.''