Some toys never go out of style. And some brainteasers never stop teasing brains! (Did you know that if you turn a Rubik’s Cube once every second, it would take 1.4 TRILLION years to go through all the permutations?) Collected here is a vibrant variety of puzzles and games that have been and will be busting brains for decades. They stood up to time - But is your brain strong enough to stand up to them?