If you’ve seen Back to the Future’s opening, you’re familiar with Rube Goldberg devices—incredibly complicated makeshift contraptions designed to accomplish a random task. The Incredible Machine makes Rube Goldberg inventions interactive, using an open-ended palette of gadgets to string together (as well as realistic physics and gravity) to solve each level’s objective. After years of sequels, now there’s even an iPad version. Who says science isn’t fun?
21. The Incredible Machine