The IW Engine is a game engine developed by Infinity Ward, based on id Tech 3, which was first used on the highly successful game Call of Duty 2. Since then, it has been continually upgraded and used on the games Call of Duty 4, Call of Duty: World at War, Call of Duty: Modern Warfare 2, and Call of Duty: Black Ops.

Noobkiller2 says

6/10 - Agree Disagree (1)

Same engine every single time.
You just cant let it die a respectful death.
Updgrading graphics cant just make it better.We need a new build,a new engine