Treyarch Engine - 2008

Treyarch Engine is a game engine developed by Treyarch, first used in Call of Duty: World at War. Based on IW 4.0.
iw3
↓
Treyarch Engine
→
Call of Duty: World at War - 2008
Call of Duty: Black Ops - 2010
Call of Duty: Black Ops II - 2012
↓
Treyarch Engine 2.0 (2015)