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 the 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!