Classic games from the first few generations of home consoles are often rife with little secrets and tricks designed to make the experience more interesting, and some of them are still being discovered to this day. Case in point: a brand new secret has just been found in Mike Tyson’s Punch-Out!!, almost thirty years after the game’s initial release. In one of the fights against Piston Honda, players have known for a while that a well-timed punch can knock him out immediately—but it turns out that Nintendo hid a small visual cue in the game so that players can know exactly when to hit the button. You can check out an explanation of this trick in the video above!