Originally released in October 1987, Mike Tyson’s Punch-Out!! has become one of the most classic boxing video games for the original NES. Although it has been around for almost 30 years, a Redditor named midwesternhousewives recently discovered a small Easter egg that’s been hiding in plain sight this whole time.

During the first World Circuit fight, against Piston Honda, a visual cue in the crowd behind the fight tells the player when to deliver the one-hit knockout punch. In the front row, on the left side of the screen, you’ll see a bearded spectator enjoying the fight. When he ducks down, that’s the exact moment Little Mac should throw a punch—as Piston Honda moves backwards to charge his knockout blow. This Easter egg also works on Bald Bull in the second fight later in the game.

Back in 2009, late Nintendo president Satoru Iwata admitted that there’s a similar visual cue that involves a camera flash on the right side of the first row in the crowd. When the flash goes off, that’s the exact moment to throw a punch to knock out Bald Bull during the first fight.

[h/t Nerd Approved]

Images courtesy midwesternhousewives/YouTube