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| genre = First-person shooter | modes = Single-player, multiplayer | platforms = Microsoft Windows, Mac OS X, Linux }} ''Counter-Strike: Condition Zero'' is a multiplayer video game and the follow-up to ''Counter-Strike''. The game was released in 2004 using the GoldSrc 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 playing as counter-terrorist alongside bots. The players unlock maps and more effective bot teammates as they pass certain requirements for each map while playing as a counter-terrorist. These requirements include targets such as "kill 3 enemies with a Bullpup" or "win a round in 60 seconds". ''Counter-Strike'' bots are a prominent part of ''Condition Zero'' gameplay. ==Development== ''Condition Zero'' started development in 2000 by Rogue Entertainment, initially announced in May 2001 at E3 of that year. Rogue's producer for the game, Jim Molinet, later that year moved to Sony and the development company went defunct, leaving Valve with the development. Later, they gave it to Gearbox Software, the developers of the ''Half-Life'' expansion packs, so that Valve could focus on the development rival ''Team Fortress 2'' and its new engine. Gearbox created an overhaul of ''Counter-Strike'' with high quality models and improved graphics. They also added alpha blending, allowing for realistic foliage and weather effects, a single-player mode to the game, similar to the final game, based on inspiration of Randy Pitchford from console games such as ''Tony Hawk's Pro Skater'' and ''Gran Turismo 3: A-Spec'', and they included explosive weapons such as a Molotov cocktails, tear gas bomb, and M72 LAW rocket. They also used the release of Steam to their advantage to help prevent cheating by ensuring constant code updates. After a few developmental delays, it missed its late 2002 deadline and was given over to Ritual Entertainment, who completely remade the game into a single-player one with 20 unconnected missions. They enhanced the AI of the original ''Half-Life'' to create the initial bot AI. It was expected to have a release in early 2003 with a secondary multiplayer mode, and developed alongside the Xbox version of ''Counter-Strike''. Alongside various other Valve titles, the game received versions for OS X and Linux in 2013. However, after declaring the game gold and handing out review copies of Ritual's work, Valve saw an average review score of around 60%. The companies retracted the gold status and work on ''Condition Zero'' was essentially begun again. Ritual's share of development was dropped, and development was given over to the relatively young Turtle Rock Studios, who easily restarted where Gearbox left off. They developed an updated bot AI that was beta tested in ''Counter-Strike'' 1.6 before release. The final game contained a version mirroring Gearbox's version, along with 12 missions recovered from Ritual's single-player portion, called ''Deleted Scenes''. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Counter-Strike: Condition Zero」の詳細全文を読む スポンサード リンク
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