Sale MindWare Marble Circuit Puzzle Games That Teach: A mind-boggling brain teaser toy that engages your mind...Easy Kids Brain Teaser Puzzles for Solo Play: Simply choose a card to set...64 Card Challenges: Ideal for smart kids who love logic puzzles for kids...Marble Maze Set: Great as logic puzzles for teens or as math puzzles for...This set of engaging brain teasers for kids includes 1 gameboard, 64 puzzle...