Crazy Machines 10 and 15 in one pack! Crazy Machines 10 Turn the crank rotate the gears push the levers use the catapult explode it or fly it From grilling sausages with a pulley gears rubberbands and a candle to firing a cannon with a basketball these wacky brain-teasers will light up your imagination with creative and addictive fun! Crazy Machines 15 Create your own zany \'Rube Goldberg\' devices! Go crazy with over 200 brand new gizmo-twistin\' levels! Enjoy all-new elements music backgrounds and more Start off in the Inventor\'s Training Camp to sharpen your skills Get ready for explosive action and building fun using 100 awesome and wacky parts - including bottle rockets cannons bombs and robots