A couple of years ago, Julie told us about the Mindflex game from Mattel. It’s a “a mental acuity game where you use your thoughts to move a ball through an obstacle course.” Now Mattel is offering the Mindflex Duel so you can go head-to-head (pardon the expression) against your friends. There are five game modes, and the game comes with two headsets and four foam balls. The Mindflex Duel is available through Amazon. Price varies depending on the vendor, but starts at about $80 for a new game.