Each puzzle in the game has a set objective that can be anything from feeding cheese to a mouse to lining up different types of balls in a cage. To accomplish these feats, you must place different items into a partially assembled contraption. The game offers more than 100 machine parts that include simple items such as bricks, bowling balls, rope, and pulleys, and more complex parts like lasers, timers, miniature blimps, explosives, toasters, and fans. There are also a number of humorous and unusual parts, like an ape-powered motor, a mouse-powered motor, an alligator, and a miniature person. Each puzzle has a limited number of specific items, and you must try to place them in the correct positions to complete the chain reaction that will achieve the desired result. A puzzle might require a ball to fall onto a lever, which pulls a rope attached to a spring-loaded match, which lights the fuse to a rocket, and so forth. What makes the puzzle challenging is that only a portion of the items are in place at the beginning, and it is up to you to complete the contraption.