All of us suffer from occasional "mental block," but Duncan provides relief with the new Mental Block brain twister. Fun for 2 to 4 players, this game is easy to learn, but a challenge to win! More fun than 2-dimensional games, with Mental Block you can go around corners and over walls. With alternating turns, simply be the first player to connect 4 pegs in a row, and you win! Other game variations included. Key Features: 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!