As a turn-based strategy game, Blokus follows very simple rules. Each player starts with 21 polyominoes, shapes consisting of one to five squares. Each player places his/her pieces on the board in turn, with the purpose of placing a maximum number of pieces on the board. There is one essential constraint: the pieces of the same color must touch each other by one or more angles, but must never touch at an edge. Players must invoke a clever strategy to extend their territory, all the while attempting to block an opponents’ path. But remember, each piece is different and every move can be decisive!