Co-op so far is, well, basic. The lion's share of development work appears to have gone into getting the feature working rather than making it distinctive, and to that end, Dead Rising 2 appears to be mostly successful. All story progress belongs to the hosting player's game. The appeal for visiting players is in some ways reminiscent of a loot based RPG, where they can grind PP to level up their Chuck and build new weapons to bring back with them to their own game. The game's structure remains unchanged in co-op, with slight difficulty tweaks to speak of, but no other meaningful differences apparent.