A blast from the past for all you old school NES Fans. http://www.davieboy.net/punchout/ Extra bonus - assign each Punch Out Character a real life Rockets doppelganger
The select button (space bar) wasn't working for me. Unless I'm wrong and that's not how you use the star punches.
If he's the guy I thinking of you have to punch him in the gut when he is hopping forward on his special punch.
No sound on mine, but I have played this game so many times when I was younger that I swear I could hear the sounds anyway.
TO beat King Hippo, wait till he does the punch that he begins by opening his mouth. Hit him ONCE in the mouth and then hit him in the gut multiple times. Eventually, he'll go down and he never gets up.