Treyarch game design director David Vondehaar has defended the 7 year old Call Of Duty engine it inherited from Infinity Ward, which it's currently using a version of for Call Of Duty: Black Ops 2.
"Anybody who comes at the engine needs to remember it's the 60 frames they love in the first place," Vondehaar told OXM.
"And we can make it beautiful - that's through years and years of working with the engine, improving upon it and improving the pipeline and improving our approach, our lighting rendering."
Call Of Duty: Black Ops 2 uses the IW Engine, first used for Call Of Duty 2 in 2005. It was a modified version of id Tech 3. It has since been used for the Call Of Duty series and the Bond title Quantum of Solace, with new features and improvements added with each release.
"People like to talk about the engine, but the truth of the matter is that this isn't like something that was invented six years ago. At this point that engine doesn't resemble anything like any engine - we've ripped out the UI system, the rendering and the lighting are all new, the core gameplay systems are all new."
"To me, it's like I never really understood. It runs at 60 and it's gorgeous. What exactly is there to be upset about with the engine?"
Call Of Duty: Black Ops 2 is due for release this year using the IW 3.0 engine.