Duncan has turned on its edge with the new Mental Block brain twister. With alternating turns, simply be the first player to connect 4 pegs in a row, and you win! Fun for 2 to 4 players, easy to learn but a challenge to win! Over walls and around corners; use all 6 sides. More fun than 2-dimensional games, Great for kids of all ages, Multiple game variations Size: Approximately 3" x 3" Ages 6 and up 2-4 players.