You win when your opponent doesn't get up after 10 seconds or is knocked down 3 times. You lose if either of these happen to you. Incredible Yam has a 75% chance to block any attacks when in a neutral state. He gets in a neutral state when the player is hit by one of his attacks, or naturally a little bit after an attack. He is invincible during all attacks. Unlike regular Punch Out, there is no interrupting his attacks. Incredible Yam is vulnerable when his attacks are blocked or dodged. Don't dodge into his punches! His jumping attack cannot be blocked. Also unlike normal Punch Out, there is no gameplay difference between body blows and uppercuts other than appearance.