: All 99 maps in one pretty pic.

Your picture of H2 Coagulation isn't of the one from Halo 2, it's of the H2 Coagulation map for Halo CE my team released back in June 2005. You can tell the base lights aren't right (as well as the lighting for the whole thing in general) and you can also see the black and yellow rocket warthogs by the base.

Although that's pretty cool what we did back then was good enough to be mistaken as H2, even today.