- last post: 01.01.0001 12:00 AM PDT
That's not how things work.
I assume you mean co-op right?
Well, it would be difficult. It's not something that a good modder can just take up and do, it's much harder.
Things like making Halo a 3rd person shooter have been done, but that was just modifying certain data that contained the position for the "camera."
Making the co-op mode would be a different story. I admit, I can't see a way it could be done. Maybe online with CE, since people have actually figured out how to make single player maps now, but not for PC as far as I can see.