Crysis Warhead, like the original, Crysis, is based in a future where an ancient alien spacecraft has been discovered beneath the Earth on an island east of the Philippines. The single-player campaign has the player assume the role of (Former SAS) Delta Force operator Sergeant Michael Sykes, referred to in-game by his call sign, Psycho. Psycho’s arsenal of futuristic weapons builds on those showcased in Crysis, with the introduction of Mini-SMGs which can be dual-wielded, a six-shot grenade launcher equipped with EMP grenades, and the destructive, short ranged Plasma Accumulator Cannon (PAX). The highly versatile Nanosuit returns.
In Crysis Warhead, the player fights North Korean and extraterrestrial enemies, in many different locations, such as a tropical island jungle, inside an “Ice Sphere”, an underground mining complex, which is followed by a convoy train transporting an unknown alien object held by the North Koreans, and finally, to an airfield. Like Crysis, Warhead uses Microsoft’s new API, Direct3D 10 (DirectX 10) for graphics rendering.
Crysis is still a massively intensive engine and the reference clocked HD5850 struggles in a few of the sections, dipping under 25fps. The overclocked cards keep the rates into the 25-30 bracket with the HD5870 coming out top. The extra memory bandwidth of the Sapphire Toxic card helps with Crysis Warhead.