Willy the Worm
Willy the Worm is a single-player platform game created by programmer Alan Farmer of Charlottesville, Virginia and released for MS-DOS in June 1985. It was followed by a sequel, Willy the Worm Part II: The Big Trip Home.
Farmer encouraged the free distribution of his games and solicited voluntary $10 donations to help support his development efforts. Other projects by Farmer include Life in the Fast Lane (1989), based on Conway's Game of Life, and Rocket Rangers (1990), a Spacewar! clone.