Jolly Co-op Mod

Jolly Co-Op Mod enables local campaign co-op, along with extra features that are configurable. With this mod, up to 4 players can play in a single section. All players will share food points that can be customized. Hold grabbing near another player for piggyback riding, which is helpful when one of the players is downed.

With an external application such as Parsec or Steam Remote Play, the user can connect to other players across the Internet.

Further instructions and information can be read here (available in English, Korean, Japanese and Russian)