The first entry in The Incredible Machine series. In the game players are given relatively simple objectives and must construct elaborate Rube Goldberg-esque inventions in order to achieve them.
The game is comprised of 87 preset puzzles and a Free Form Machine mode which works as a puzzle editor. Each puzzle has an apparently simple objective like "put baseball on the box" or "pop 3 balloons" and players are given a specific set of objects in order to achieve this goal. Objects include ropes, pulleys, magnifying glasses, various animals and balls. Also, every level includes two physics settings: Gravity and Air Pressure. For example, balloons will go down on levels in which Gravity is set to lunar.