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Counter-Strike: Condition Zero

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Counter-Strike: Condition Zero
Developer(s) Valve Corporation
Gearbox Software
Ritual Entertainment
Turtle Rock Studios
Publisher(s) Valve Corporation
Platform(s) Microsoft Windows
Release date(s) March 23, 2004 (Windows)
February 21, 2013 (Linux)
Genre First-person shooter
Mode(s) Single-player
Rating(s) ESRB: Mature
PEGI: 16+

Counter-Strike: Condition Zero (CS: CZ) is a first-person shooter video game and the sequel to the original Counter-Strike.


The game was released in 2004 using the GoldSrc Half-Life engine. Condition Zero features a multiplayer mode, which features updated character models, textures, maps, and other graphical tweaks.

Unlike other Counter-Strike games, Condition Zero also contains a single-player mission pack with the player unlocking maps and more efficient bots as they pass certain requirements for each map while playing as a Counter-Terrorist. These requirements include objectives such as "kill 3 enemies with a Clarion 5.56" or "win a round in 45 seconds". This game mode is called Tour of Duty.

There is another single player mission pack called "Deleted Scenes". So far, Condition Zero is the only game in the franchise that features a single player campaign. Also, before Global Offensive, this is only GoldSrc game where players can receive full instructions even in multiplayer (this will however, disable the killfeed).

Condition Zero is known for introducing the Counter-Strike bot, although the Xbox port of Counter-Strike was actually the first game in the series to include it.

As of April 15, 2009, Counter-Strike: Condition Zero is one of the ten most played Half-Life modifications in terms of players, according to GameSpy.[1]

It has been released via both retail stores and Steam. It is bundled with a copy of Counter-Strike regardless of how you purchase it.

As a promotional item, Counter-Strike: Condition Zero Cards were also available.


Condition Zero was initially given to Rogue Entertainment for development, but was dropped after Rogue filed bankruptcy. Gearbox Software and Ritual Entertainment took their turns at developing it, but eventually the final game was a collaboration between Valve and Turtle Rock Studios, with Ritual's version packaged with it as the Counter-Strike: Condition Zero Deleted Scenes game mode.

A large portion of Condition Zero maps are re-made Counter-Strike maps featuring newer textures, effects, and better graphics. Others were taken from Deleted Scenes missions and edited by Turtle Rock Studios. Several new maps by them were also incorporated into the Xbox port of Counter-Strike. Some new maps were also developed by former Counter-Strike developers that were integrated with help from Valve.

Behind the scenes

  • An older build of the game, known as "cstrike_trs" (Counter-Strike: Turtle Rock Studios), was leaked with several other mods and the Half-Life 2 Beta in 2003. This build includes the multiplayer and offline portions of the game with bot support, and spots several differences.
    • The game files include the bot voices before they were processed with a radio filter.
    • Cut maps are included within this build, along with a folder containing many community and test maps. Some maps differ from their final versions.
    • Counter-Strike's models are used for players, bots and weapons.
    • Equipment sets were not yet implemented.
    • The Tour of Duty campaigns features 7 tours instead of the released 6, all of which included some of the cut maps.
    • Bot of higher levels were not restricted to a certain amount of points. A player could hire a 5 points bot early on in the campaign.

External links


  1. GameSpy - Top Mods For Half-Life By Players

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