Crysis is a science fiction first-person shooter computer game developed by Crytek and published by Electronic Arts. It was released on November 13, 2007 in North America, November 15 in Australia, the following day in Europe and November 23 in New Zealand.

Crysis is based in a fictional future where an alien race has invaded Earth. The single player campaign has the player assume the role of United States Delta Force operator Jake Dunn, refered to in-game by his fieldname- Nomad. Nomad is armed with various futuristic weapons and equipment, most notably a "Nano Muscle Suit" which, according to Crytek senior game designer Bernd Diemer, was inspired by the United States' Future Warrior 2020 program. In Crysis, the player fights both North Korean and extraterrestrial enemies, in four different locations: a tropical island jungle, inside an "Ice Sphere" (consisting of the same jungle, but frozen), the alien ship itself (with a zero-gravity area) and an American aircraft carrier. Crysis utilizes Microsoft's new API, Direct3D 10 (DirectX 10) for graphics rendering, and includes the same editor that was used by Crytek to create the game.
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