ThinkFun has chosen eight of the world's best brainteasers for our first ever set of Aha! Brainteaser Classics. These little gems are world-famous for their perplexing properties, but we've given them a new twist - hints. Each brainteaser comes with a card explaining the brainteaser, and three hint cards. Stuck? Turn over the first hint to get a nudge in the right direction. Brainteaser lovers can work through the solutions on their own, or use the hints for a creative boost. Brainteaser Classics are great to play on your own, or fun for parties with people of all ages. You won't believe how much fun is packed into this one box! Aha! Brainteaser Classics include: Missing T, Pack It In, Looptrap, Wing It, All Uphill, The Fifth Chair, Pyramid Twins, Double Square.