Crazy Machines 2 is packed with all-new features to help kids create their wackiest "Rube Goldberg-style" contraptions. A 3-D physics engine lets them craft even more complex gadgets and effects. Builders can kick the brain into high gear with mind-bending puzzles and tinker with wrecking balls, lightening rods, lasers, pulleys, springs, gears and more to create the chain reaction they need. Launch date: April 15, 2008.