IW 3.0 (Modern Warfare Engine) - 2007

IW 3.0 is a game engine developed by Infinity Ward, first used in Call of Duty: Modern Warfare.
iw2
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IW 3.0 (Modern Warfare Engine)
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Call of Duty 4: Modern Warfare - 2007
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IW 4.0 (Modern Warfare 2 Engine) (2009) Treyarch Engine (2008)