Use the arrow or W,A,S,D keys to attack the other sumo wrestler. If you knock him out of the ring you get a large bonus, but if you get knocked out of the ring you will quickly loose points.
Do you think your fingers are fast enough?
Test your speed as you navigate a small raft down a raging creek littered with whirlpools, angry turtles and other obstacles in this new and exciting Riva...