Tuthrick: Serveral years ago I finished co-op game for Unreal and I don't remember any shenanigans in order to make it work and that was a disc version of the game. I started the multiplayer game with co-op game type and the map Vortex Rikers and was ready to go. I do remember however, that the Return to Na Pali expansion campaign had issues, because I couldn't get past the small intermission maps, where the player character narrates about what's happening, since they don't have exits. The workaround would be to skip to the next map, but then you lose all your weapons and items, so I decided it wasn't worth it.