Multiplayer is a mode that lets you play online with friends or strangers. The teams consist of two groups of eight. Players can drop in and drop out at any time during the game. When this happens they are replaced by an AI so the teams stay even throughout the match. At the end of each match the team that succeeds goes forward to the next level but the team that loses will have to do the level again. On the PC version players have the ability to create dedicated servers and change the number of players and AI in a game, they can also change some of the rules.