Do you like to play with marbles? If you do, then this is the kit for you! The Marble Mania works with marbles as the fuel source to power a vehicle. You make it much like a paddle wheel boat, but marbles hit the paddle instead of water. It's a tough one, but it can be done! Includes all the stuff including a wood chassis, wheels, rubber bands, axles, paper and hardware. Each kit contains all the items you'll need to make the vehicle, plus one set of instructions...but try to make it on your own first! Use the instructions only if you get stuck! If it works...then you succeeded!