Crysis is based in a future where an ancient alien spacecraft has been discovered beneath the Earth on an island near the coast of East Philippines. The single-player campaign has the player assume the role of United States Delta Force operator Jake Dunn, referred to in-game by his call sign, 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 Force Warrior 2020 program and other projects relating from the Natick Soldier Systems Center. 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 a United States Navy aircraft carrier. Crysis uses 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.
A standalone, but related, game titled Crysis Warhead, was announced on June 5, 2008. It was released on Steam September 17, 2008.
Crysis, Crysis Warhead and Crysis Wars were re-released as a compilation pack titled Crysis Maximum Edition on March 10, 2009...