Jawbreaker

Jawbreaker is a video game programmed by John Harris and published by On-line Systems for the Atari 400/800 in 1981. Originally intended to be a fairly direct Pac-Man clone, Jawbreaker turned out to be a relatively inventive version with unique gameplay. It was praised by many critics and became a big seller for Sierra Online. The story of Jawbreaker's creation is part of the book "Hackers" by Steven Levy.