Co-op Mode is a mode featured in both Dead Rising 2, Case West and Off the Record allowing two players to play together in the Fortune City game area. This allows players to work together to defeat difficult bosses, complete cases, escort survivors, and generally play around in the game world.
In Dead Rising 2, both players play as Chuck. Players are able to import a Chuck from their game files In Off the Record and Case West one player controls Chuck Greene and the other controls Frank West.
The player is able to set your game to Public, meaning that anyone on Xbox Live or PSN will be able to try to access the player's game, or Private, meaning that only friends can join the player's game.
The player is able to play the entire game in Co-op but be wary of timed missions because both players need to be near a door to leave an area.
A loss of all health will not result in a game over. If one player gets downed, the other player will have to get food in a certain amount of time or the downed player will die. If both players are downed then the primary player, who's hosting the game has the option to load a previous save, restart the story or quit, while the secondary player is only given the option to quit.
In Co-Op, survivors will not join the two Chuck's party until both Chucks have gone through all the necessary dialogue.