LBX (Little Battlers Experience)

Little Battlers Experience, also called as Danball Senki (Cardboard War-machines), or simply LBX, is a series of action role-playing video games created by Level-5, involving small plastic model robots known as LBXs 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. - by Wikipedia