«So the guy who created Adventure, a man named Warren Robinett, decided to hide his name inside the game itself. He hid a key in one of the game’s labyrinths. If you found this key, a small pixel-sized gray dot, you could use it to enter a secret room where Robinett had hidden his name.” On the TV, Halliday guides his square protagonist into the game’s secret room, where the words CREATED BY WARREN ROBINETT appear in the center of the screen.
“This,” Halliday says, pointing to the screen with genuine reverence, “was the very first videogame Easter egg. Robinett hid it in his game’s code without telling a soul, and Atari manufactured and shipped Adventure all over the world without knowing about the secret room.»