This wacky invention game series is one of the most critically acclaimed programs of all time. Construct cause-and-effect contraptions with working pulleys, levers, conveyor belts, motors, balloons, and more. Use your creative ingenuity to construct over 150 different machines that create specified effects. Or play in the free-form mode to build your own puzzles from hundreds of active parts and background items. Once you've honed your inventing skills, you can put them to the test against someone else, in the head-to-head mode.