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IW 3.0 is a game engine developed by Infinity Ward for Call of Duty 4: Modern WarfareThe engine has arguably been distinct from the id Tech 3 engine on which it is based since 2005. Development of the engine and of COD4 has resulted in inclusion of advanced graphical features while maintaining an average of 60 frames per second. Call of Duty 4: Modern Warfare was released using version 3.0 of the engine. This game included features such as bullet penetration, improved AI, lighting engine upgrades, particle system enhancements and many more improvements.
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