Jeff Tunnell Productions

Jeff Tunnell Productions was a casual educational game developer founded by Jeff Tunnell in 1992 and it lasted until 2000. The company is best known for the creation of The Incredible Machine series, games for the 3-D Ultra brand, and Quarky & Quaysoo's Turbo Science. Sometime after the release of The Incredible Machine II, Jeff rejoined Dynamix, who then took over the franchise later that year.