Crysis

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 Jake Dunn. Dunn is a United States Delta Force operative, who is armed with various futuristic weapons and equipment, most notably a "Nano Muscle Suit", which is an artificial and technologically advanced exoskeleton, inspired by the United States' Future Warrior 2020 program, according to Bernd Diemer, one of Crytek's senior game designers. In Crysis, the player fights both North Korean and extraterrestrial enemies, in four different locations: a tropical island jungle; an American aircraft carrier; inside an "Ice Sphere", which will consist of the same jungle, but frozen; and the alien ship itself, some parts of which will be zero-gravity.