In 2005, Mark Healey, working for Lionhead as an artist at the time, got the mad idea to use his programming skills to marry rope physics code to kung fu fighters. Then he wrapped the whole thing up with footage from an ultra low-budget chop-socky film he had made with his friends. The result was Rag Doll Kung Fu, a goofy indie game that implausibly wound up as the first non-Valve developed game to be offered on Steam. People Make Games interviewed some of the folks involved, and the story is a mix of luck, good timing, and a lost wallet.
Healey left Lionhead in 2006 and founded Media Molecule with Alex Evans, David Smith, and Kareem Ettouney. Rag Doll Kung Fu continues to sell on Steam, but new versions were made for PlayStation and iOS. Steam published 7,672 games in 2017.