Danball Senki is a PSP game developed by Level 5 involving small plastic model robots known as LBXs (standing for `Little Battler eXperience`) that fight on dioramas made out of cardboard, and the main character Ban Yamano setting out to battle against LBXs created by other characters. For international release, Level-5 adopted the English language title `Little Battlers eXperience.`