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The third expansion pack, Marine Mania, released later on in 2006. It expanded on animal behaviors, added live food, new campaign missions, maps, and challenges, and added another new set of twenty animals, including warthogs, meerkats, pygmy hippos, and Masai giraffes. The second expansion pack, African Adventures, released in 2006. The first expansion pack, Endangered Species, released in 2005, adding Jeep tours, sky trams, elevated paths, new maps, challenges, and campaigns with built-in conservation areas, animal skin variants, and twenty new animals, including Komodo dragons, koalas, spectacled bears, and gray wolves. The scope of the game expanded to fully modeled, 3D maps with complex animal behaviors and vast amounts of environmental customization. The sequel, Zoo Tycoon 2, released in 2004.
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The first game released in 2001, with two additional expansion packs: Marine Mania and Dinosaur Digs. Zoo Tycoon is a series of simulation games in which you are put in charge of building a successful zoo.
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