TIL no one at Atari knew that Warren Robinett had inserted the hidden message "Created by Warren Robinett" (which established the term Easter egg in gaming) into the Atari 2600 game Adventure until a 15-yr-old named Adam Clayton discovered it & sent a letter to Atari in 1980 explaining how he did it

TIL no one at Atari knew that Warren Robinett had inserted the hidden message "Created by Warren Robinett" (which established the term Easter egg in gaming) into the Atari 2600 game Adventure until a 15-yr-old named Adam Clayton discovered it & sent a letter to Atari in 1980 explaining how he did it