Challenge Grampa Grumble to ten rounds of boxing. Be careful. Grampa backs up his loud mouth with fists of fury!
Use the 'V' key for the jab, 'B' for an uppercut, and 'N' for your overhand punch.
BlockPress the Space bar to block. Be careful; you can only block for so long.
Extra PowerPress and hold your punch buttons to build up additional power!