Developer(s): Valve Software, Gearbox Software, Ritual Entertainment, Turtle Rock Studios
Publisher(s): Vivendi Universal
Engine: Half-Life engine (GoldSrc)
Release date(s): March 21, 2004
Genre(s): First-person shooter
Mode(s): Single player, Multiplayer
Rating(s) ESRB: Mature (M) PEGI: 16+
Platform(s): Microsoft Windows Media CD or Steam download
System requirements: Intel Pentium III, 96 MB RAM, 16 MB VRAM, 500 MB free hard disk space
Counter-Strike: Condition Zero (abbreviated CS: CZ or just CZ) is the single player version of the multiplayer game, Counter-Strike. The game was released in 2004 using the aging GoldSrc Half-Life engine. CS: CZ also features a multiplayer mode, which mostly features updated character models, textures, maps and other graphical tweaks.
installeres for updating your counter strike condition zero version. You only need one of the installeres. Install/extract in the same folder as counter strike condition zero.