Little Battlers eXperience (ダンボール戦機 Danbōru Senki, lit. "Corrugated cardboard war-machines"), is a role-playing video game series 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.