A spin-off of The Incredible Machine, Sid & Al's Incredible Toons builds on the contraption-building premise by giving it a new theme based on silly animated cartoons, as well as a new assortment of levels and parts. The game primarily revolves around the cat-and-mouse antics between Sid E. Mouse and Al E. Cat, both of which interact with numerous puzzle parts in a variety of ways.The game later received an enhanced update in 1994 with The Incredible Toon Machine.