The theme song of Sony X Nintendo is "From Heads Unworthy" from Rise Against Rating: T Sony X Nintendo: You play as all characters on each side (you pick). You fight 3 on 3 battles and if one character dies, another character from the same brand will take their spot untill all 30 characters run out of HP. Battle fight after fight until you reach Interitum ad Terram (Latin for "Destruction to Earth"), the final boss of Arcade. Once you defeat him you can see the character you won as special ending. Arcade mode battles are always 3 on 3.