Halo 2 > Halo 3 > Halo 3 ODST > Halo Reach > Halo CE
Based on campaigns.
I wont be online for another couple days but i just made this thread to add a few people who want to play customs sometime
Only requirements are you need to have all the maps, other than that, we can play or do whatever you want.
GT: XeX BirdBurner