SideM is a social media/trading card game spin-off of THE iDOLM@STER series. Instead of focusing on female idols, however, all the idols in this game are male. The player assumes the role of a producer for 315 Production. In addition to many new male idols, the game includes the idol unit Jupiter, consisting of Touma Amagase, Shouta Mitarai, and Hokuto Ijuuin, who originally appeared in THE iDOLM@STER 2 under 961 Production.
Gameplay-wise, the game is similar to Cinderella Girls and Million Live!. The player produces idols by training them and engaging in card battles.
