Jet Force Gemini: Co-Op

This is a hack which adds support for playing the game's single player mode with multiple players, up to FOUR (originally only two could play) as well as allowing other players to play as ANY character which can be selected in multiplayer mode (Floyd will be able to be chosen through the regular co-op menu choice when entering the game through single player; co-op for this hack is entered through the multiplayer mode).

The hack works by reprogramming the game to allow save loading through interfacing with the controller, after which the loaded game will be able to be saved normally as a result of another assembly hack which will constantly copy data from the multiplayer mode's addresses to the memory range which is saved by the game during normal saving (which is possible by forcing the single player menu in multiplayer if and only if a save is loaded).