All of us suffer from occasional mental block, but 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 3D GAME: Mental Block takes puzzles to a new dimension. The game is 3D so players can move their pieces around corners and over walls, using all 6 sides of the cube. EASY TO PLAY: With alternating turns, simply be the first player to connect 4 pegs in a row, and you win! 2 TO 4 PLAYERS: Mental Block is played with 2 to 4 players, so you can play even with just one other person. FUN FOR ALL AGES: Mental block has simple rules and is easy to learn, making it a great for kids of all ages. This puzzle game is recommended for ages 6+. MORE GAME VARIATIONS: Multiple variations of ways to play the game included in instruction manual. Many games all in one!