NES classic 'Punch-Out' has an Easter egg that went undiscovered for 29 years

Easter eggs in video games are everywhere, but most don’t take nearly three decades to figure out. ‘Punch-Out’ — aka ‘Mike Tyson’s Punch-Out’ — is the obvious exception to this rule. Reddit user Midwesternhousewives used his weekend to discover an Easter egg in Punch-Out that tells you when to deliver a knockout blow to two separate fighters.
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