Steven Universe: Attack the Light! is a tactical role-playing video game developed by Grumpyface Studios and published by Cartoon Network. The game, based on the animated TV series Steven Universe and featuring a story written by series creator Rebecca Sugar, was released for iOS and Android mobile devices on April 2, 2015. An Apple TV/tvOS version was later developed, which added "Diamond Mode", a higher-difficulty version of the game with added bonuses.