Co-developed by Valve and Turtle Rock Studios, Counter-Strike: Condition Zero introduces a brand-new single-player experience to the Counter-Strike series, along with special enhancements for on-line play.

Powered by the Half-Life engine, gamers will move through new and challenging single-player scenarios ranging from harsh jungle environments, artic terrains, deserts, and international city streets. In addition, Counter-Strike: Condition Zero offers a brand-new Career Mode that will take the player through progressively difficult matches alongside, and against, the Official Counter-Strike Bot. In this mode, the player will begin with limited access to A.I. teammates, items and weapons, but will earn increasingly sophisticated resources as he progresses up the ladder.