Originally, you can only play Condition Zero on Windows XP or newer but now you can play on both Windows and Mac OS X computers. In addition to being a multiplayer game, it also features 2 single-player campaigns: Tour of Duty and Condition Zero: Deleted Scenes. Condition Zero also features updated character models, textures, maps, and effects of the original Counter-Strike. First released in 2004, the game used a three-dimensional video game engine known as GoldSource to enable multiple players to join in the game. Counter-Strike: Condition Zero is a first-person shooter game developed by Ritual Entertainment, Turtle Rock Studios, and Valve.
