''Zoo Tycoon'' is a PC game where the player is given the task of managing the zoo, keeping both its guests and animals happy and healthy. Expansion packs have also added dinosaurs and marine life to the mix.

The sequel, ''Zoo Tycoon 2'', brought the game into 3D and changed several mechanics, while still following the same set of ideas. This game was also given expansion packs: ''Endangered Species'', ''African Adventure'', ''Marine Life'', and ''Extinct Animals''.

A reboot for the Xbox One and Xbox 360 was released in 2013.
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!!!This game provides examples of:

* AnEntrepreneurIsYou
* AnimalsLackAttributes: Animals in [=ZT2=] squat to poop, but nearly all have no orifice to poop through. (The hippos do have an anal dot.) Aurochs cows in the "Extinct Animals" expansion have a visible udder, but it doesn't have any teats.
* ArtificialStupidity: Many, in both the original and in the sequel.
** The animal's inability to reach a certain pile of food or food troughs for absolutely no reason. (Though sometimes that message will show up but when you click over to check it out the animal is eating/drinking from the very thing they supposedly couldn't get to.)
** Zookeepers being unable to reach a animal/food dish/poo for no reason at all. Instead choosing running around the sides of the exhibit.
*** It should be noted that this is sometimes the player's fault if they forgot to add a staff gate (in the sequel anyway, as gates are automatically added to enclosures in the original) or if the gate is blocked by another object, but just as often the keeper simply has no excuse.
** In the original game. If you put 500 scientists and a dinosaur on an island, the scientists will completely ignore the dinosaur which is eating them up. Meanwhile, the only scientist in your park who isn't on the island will be trying to get there to put the dinosaur back in a cage. Marine Biologists are even worse. Fortunately this was somewhat fixed for the sequel ''Extinct Animals''.
** Zoo guests are annoyingly dimwitted. You can build a zoo so a whole food court + bathrooms is within easy reach at all times, but there will always be at least one angry guest with a critical level need because they decided that riding a zoo ride/making a wish/talking to another guest was more important than taking care of that need before it got too high. Of course, the zoo is what they blame. In other words, [[TakeThat a perfect representation of reality.]]
* AwesomeButImpractical: Some of the best user-created zoos in the sequel use dozens of hyper-realistic mods that are used to achieve a realistic looking zoo. Unfortunately, guests cannot see through fences that they should or animals cannot get around due to too many rocks.
* ArtisticLicenseBiology:
** Occasional gaffes in animals' descriptions (Galapagos giant tortoises on the mainland?) or the criteria of a challenge (jaguars, whose breeding range extends into Mexico, not counting as a North American species).
** In most cases the female animals are not smaller than the males.
** Male and female ostriches look the same, whereas in real life the males are black and the females brownish.
** Your birds and crocodiles are said to have given birth when they have young, instead of laying a egg. The dinosaurs (witch the exception of the hidden triceratops in the first game) correctly lay eggs.
** Animals do not breed according to certain seasons, instead they breed randomly without any pattern to it. Species where normally the females would give birth all around the same time don't.
** "Bengal tigers live in small groups." Wait, what?
** Female kangaroo's are incorrectly just as red as the male ones.
** Animals have 2 young at a time at the most, even if they are lions or other animals that usually have more than that.
* ArtisticLicensePaleontology: Some of the dinosaurs and other prehistoric creatures inhabit unrealistic biomes. You can, for instance, make a ''Stegosaurus'' happier by putting a ''glacier'' in its exhibit.
* BearsAreBadNews: If you sic the bears on the zoo guests anyway.
* BigBallOfViolence: Fights between animals are shown this way in the original.
* BoringButPractical: A lot of the animals available for adoption early on (such as peacocks or gazelles) aren't as interesting as later species, but they are very easy to please and will often have a lot of babies as a result. Since guests love baby animals, they can easily earn back a lot of donation money, and you can release the babies when they grow up for an extra fame boost.
* CheatCode: ''Everywhere''. From "shift-4" for unlimited cash to the various ways renaming exhibits can unlock special animals to how aquatic-themed items react if you put them in a tank, there are little bonuses all over the place.
* EasterEgg: You can unlock triceratops, mermaids, Bigfoot, and unicorns by doing certain things. (Triceratops are also in a ExpansionPack as a non hidden animal. If you install said expansion pack, it can cause your old triceratops to be able to break out of their enclosures because the ExpansionPack changes what fences are compatible with the animal.}
* EverythingsBetterWithDinosaurs: ''Dinosaur Digs'' in the first game and ''Extinct Animals'' in the second one.
* EverythingsBetterWithPenguins: and [[EverythingsBetterWithMonkeys monkeys]]. And yes, even {{bears|AreBadNews}}. And so on, and so forth.
** In the first game, placing an Emperor Penguin in an exhibit suited to it will make it [[spoiler: kill -any- other animal placed into the same exhibit, unless it's a penguin.]]
*** Parodied in the sequel with the Killer Penguins that can get dumped on you.
* ExpansionPack: Two for the first game & four for the second.
* FantasyKitchenSink: Using the right expansion packs and Easter eggs, your zoo can include exhibits for bigfoot, yeti, mermaids Unicorns and Loch Ness monsters.
* FossilRevival: In "Extinct Animals", you can hunt for fossils and bring them to life in an extinct research lab.
* GoneHorriblyWrong: In the second game, messing too much in the genetic lab minigame will result in a killer penguin: An [[UpToEleven even more psychotic]] [[PrehistoricMonster prehistoric]] rockhopper penguin from WesternAnimation/{{Madagascar}} (yes, possibly related to ''those'' penguins) complete with teeth, [[RedEyesTakeWarning red]] [[GlowingEyesOfDoom glowing]] eyes, and a taste for Tyrannosaurs and anything smaller. ''And you can't sell it. '''EVER'''''.
** Also, if someone tries to sell you a free penguin, [[MyGodWhatHaveIDone do not accept the offer]]. Unless you like them for some strange reason.
** Even worse, sometimes after you get the Killer Penguin, IT REPLACES THE SCIENTIST IN THE GENETIC LAB. Have fun sleeping tonight!
* HolidayMode: During the in-game Christmas and Halloween, you'll sometimes see Santa or a witch flying through the air.
** And on December 25th and October 31st, you can buy special objects (A Christmas tree and a Jack-o-Lantern).
** Guests' clothing can be changed to holiday-appropriate colors with the right EasterEgg.
* MajorInjuryUnderreaction: Reading the thoughts of a guest being attacked by an animal will show that their only reaction is "Ouch! I've been attacked by [animal]".
* MisplacedVegetation: Averted in [=ZT1=], as animals become unhappy if the plants in their exhibits are inappropriate to their native habitats.
* NeverSmileAtACrocodile: Crocodiles are included in both games. In Zoo Tycoon 1, if you rename an exhibit "Super Croc", it unlocks ''Deinosuchus'', which is basically, as the exhibit name implies, a giant crocodile.
** The second game also allows for Deinosuchus to either purchase, or create in the extinct research lab. Though unlike the real Deinosuchus, it has spikes because [[RuleOfCool it looks cool or something]].
* PteroSoarer: The "Pterodactyl House" contains no ''Pterodactylus''.
* RaptorAttack: ''Velociraptor'' appears in the first game, and it's scaly. A scaly ''Deinonychus'' and ''Utahraptor'' and feathered ''Velociraptor'' appear in [=ZT2=].
* RealTimeWithPause: You can pause the game time and still make buildings or adopt animals.
* RunningGag:On the original game box arts, a white mouse can be seen if you look closely. This continued with the two white mice (Zoey & Zeek) on the [=ZT2=]boxarts.
* SceneryPorn: In Zoo Tycoon 2, even subpar landscaping can lead to this. This also a given with user created content.
* SeldomSeenSpecies: Everywhere. Japanese Serow, Bowhead Whales, Olive Baboons, ''Camptosaurus'', Markhor, Blackbuck, ''Coelophysis''...
** Continues in the second game with False Killer Whales, Pgymy Hippos, Geladas, Ethoipian Wolves, Goblin Sharks, ''Utahraptor''...
* SpiritualSuccessor: ''World of Zoo'', another Blue Fang production, can be seen as this.
* StockDinosaurs: Played straight and averted, fan-favorites like [[TyrannosaurusRex ''T. rex'']], ''Triceratops'' and ''Stegosaurus'' can be adopted but so can obscure creatures like ''Sivatherium'', ''Stokesosaurus'' and ''Kentrosaurus''.
* TheDevTeamThinksOfEverything:
** The game shows giraffes walking correctly. Giraffes walk by moving both right legs and both left legs at the same time.
** Place a mermaid statue in a tank and it will become come to life.
* TyrannosaurusRex
* {{Unicorn}}: Can be unlocked in the first game. Interestingly, the males are black and the females white.
* VideoGameCrueltyPotential:
** To both the animals and the guests. It's possible to sic lions and other predators on your prey animals or guests. There is even a nice animation for the T-rex when it attacks a man. It tosses him into the air and shallows him alive.
** You can also pick up your guests and put them in a tank, where they will drown if you block the way out.
** You pretty much can treat your animals as good or bad as you like, though the game does punish you if you are mean to them.
* VideoGameCaringPotential: If you like animals, you'll probably fulfill the Caring Potential more than the [[VideoGameCrueltyPotential Cruelty Potential]]. Even if you ''do'' occasionally let your Komodo dragons out when guests are being annoying.
* VideoGameTime: Days and months will pass in-game while your guests walk from one end of the zoo to another.
* WallCrawl: Graphics limitations can result in [=ZT2=] animals walking on near-vertical cliff walls as if they're horizontal.
* WhatCouldHaveBeen: Minor example: The box art shows a zoo keeper kneeling down to feed a gazelle. While they do feed your animals, this animation is not in the final game.
* WouldntHurtAChild / WouldntHitAGirl: Your predators will never hurt women or children no matter how hungry they are. They will attack men, however.
* YouAreNumberSix: The default name of the animals are basically "[Species Name] [Number]". For example: Nile Crocodile 1, or Polar Bear 4.

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