ozmanjusri's Journal: Lemmings: The Complete History.

Mike Dailly explains how this iconic Amiga game evolved from a simple challenge: Could a walking man be animated in an 8x8 box?

The resulting animation, drawn in an hour over lunchtime, was funny enough to inspire one of the most involving games of all time. Lemmings was released in 1991, and has been ported to almost every computer platform in existence.
http://www.javalemmings.com/DMA/Lem_1.htm