Blokus (officially pronounced “Block us”) is an abstract strategy game with transparent, Tetris-shaped, colored pieces that players are trying to play onto the board. The only caveat to placing a piece is that it may not lie adjacent to your other pieces, but instead must be placed touching at least one corner of your pieces already on the board. Each player has to fit as many of his/her 21 pieces on the board as possible. Each player chooses a color and places that set of 21 pieces in front of his/her side of the board. The order of play is as follows: blue, yellow, red, and then green.