"This was the first videogame system I ever owned," Halliday says, now in a child’s voice. "An Atari 2600. I got it for Christmas in 1979." He plops down in front of the Atari, picks up a joystick, and begins to play. "My favorite game was this one," he says, nodding at the TV screen, where a small square is traveling through a series of simple mazes. "It was called Adventure. Like many early videogames, Adventure was designed and programmed by just one person. But back then, Atari refused to give its programmers credit for their work, so the name of a game’s creator didn’t actually appear anywhere on the packaging." On the TV screen, we see Halliday use a sword to slay a red dragon, although due to the game’s crude low-resolution graphics, this looks more like a square using an arrow to stab a deformed duck.