Little Battlers Experience (ダンボール戦機 Danbōru Senki, lit. "Cardboard war-machines"), is a series of action role-playing video games created by Level-5, involving small plastic model robots known as LBXs (standing for "Little Battler eXperience") that fight on dioramas made out of cardboard, with the main character setting out to battle against LBXs created by other characters. The first game of the series was released on June 16, 2011 for the PlayStation Portable and has expanded to six official games and three Japanese anime series. Nintendo published the first game for Nintendo 3DS in North America on August 21, 2015, Europe on September 4, 2015 and Australia on September 5, 2015.