There is. To maximize sales the COD engine is designed for the weakest system for it to run on. The Xbox 360 has half a gig or ram and that is shared with the

There is. To maximize sales the COD engine is designed for the weakest system for it to run on. The Xbox 360 has half a gig or ram and that is shared with the OS, memory is an extremely tight commodity. It is quite reasonable to think that another mesh, texture map, and additional sounds clips will simply not fit in the 300ish megs that XBox developers have to deal with. Of course that can be designed around by having an engine that smart about pulling things in and out of memory. But that's hard to do especially when you have to release a game every year. I should point out I'm talking about multiplayer mainly. There isn't a technical reason for the single player other than it is a lot of extra work.