Project Genius Uwe Meffert's Puzzles: Ghost Cube Brain Teaser Puzzle, Assorted At first glance, its a six-sided cube. But with just a few twists youll quickly create more angles and odd formations that will leave you scrambling to whip this puzzle back into shape. A challenging brain teaser puzzle for adults and children alike! Display on your nightstand, shelf, or living room as a decorative conversation piece. The perfect gift for the puzzle enthusiast in your life!