A casual MMO fighting game, Rumble Fighter lets players take on each other or group up to fight in teams. Rumble Mode covers a series of six different battle modes from an all-out massive brawls to challenges like King of the Hill. Players select from pre-made character types based upon their ability to use certain scrolls, which determine fighting style (stats are also affected by gender). Fighting styles include Kung Fu, Taekwondo, and Jujitsu. The game has a system called "ExoCore" that lets characters transform physically, become stronger temporarily and unleash special attacks.The ability to customize your characters a bit does eixst through items, some of which are premium from the cash shop.