tetris
  • A teenager from Oklahoma reached the "kill screen" on Tetris. 
  • He was the first human to ever reach the screen. 
  • Only artificial intelligence had gotten that far before. 

A teenager from Oklahoma became the first human ever to reach Tetris' true "kill screen" this week — a feat that only artificial intelligence had achieved before.

Thirteen-year-old Willis Gibson was stunned when he hit the kill screen — when a player's screen freezes because they've exceeded the game's functional limit.

His score read "999999," and he'd reached Level 157. When he hit the kill screen, the game said Gibson had reached Level 18 because its code wasn't meant to advance that high, The New York Times reported.