Claim: Injustice 2 includes a leveling system.

Injustice 2 is a fighting video game developed by NetherRealm Studios and published by Warner Bros. . Interactive Entertainment . It is the sequel to 2013 's Injustice : Gods Among Us . The game was released in May 2017 for the PlayStation 4 and Xbox One . Similar to the previous installment , a companion mobile app was released for iOS and Android devices .   The core gameplay remains similar to its predecessor , albeit with minor adjustments to returning game mechanics . Injustice 2 introduces a new feature called the Gear System , a loot-dropping system that rewards players with costume pieces and equipment that can be used to customize characters ' appearances and modify their abilities and stats . According to developers , the idea for implementing an RPG-style progression system into a fighting game had existed since before the fall of Midway Games , the original publisher for the Mortal Kombat series . Director Ed Boon also sought to incorporate gameplay mechanics used by multiplayer shooter games , such as personalization , character creation , loot , and leveling up , into the fighting game genre , which led to the development of the Gear System .   Injustice 2 's storyline centers around Batman and his insurgency 's attempt to restore society after the fall of Superman 's regime ; however , the arrivals of the newly formed supervillain group `` The Society '' and the alien Brainiac force Batman to consider freeing the imprisoned Superman to help combat the threats . The game received positive reviews from critics , who praised its story , presentation , improved gameplay mechanics , abundance of in-game content , and character customization options , while criticizing its random loot and microtransaction systems .