Blokus (officially pronounced "Block us") is an abstract strategy game with transparent, Tetris-shaped, coloured 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.

There is a solitaire variation where one player tries to get rid of all the pieces in a single sitting.

Components:
Blokus Game Board (400 squares)
84 game pieces (four 21-piece sets of red, green, blue, and yellow)
Each colour includes:

• 1 one-square piece
• 1 piece with 2 squares
• 2 pieces with 3 squares
• 5 pieces with 4 squares
• 12 pieces with 5 squares

Goal of the Game:

Each player has to fit as many of his/her 21 pieces on the board as possible.

How to Play:
1. Each player chooses a colour 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.

2. The first player (blue) places any of his/her pieces in a corner square. Play proceeds clockwise around the board (yellow, red, and green), each player putting their first piece down in one of the corner squares.

3. Play continues as each player lays down one piece during a turn.

Each new piece must touch at least one other piece of the same colour, but only at the corners.

No flat edges of same colour pieces can touch.

There are no restrictions on how pieces of different colours can touch one another.

4. Whenever a player is unable to place one of his/her remaining pieces on the board, that player must pass his/her turn.

End of Game:
The game ends when all players are blocked from laying down any more of their pieces. This also includes any players who may have placed all of their pieces on the board. Scores are tallied, and the player with the highest score is the winner.

Scoring:
Each player counts the number of unit squares in his/her remaining pieces (1 unit square = -1 point).

A player earns +15 points if all his/her pieces have been placed on the board plus 5 additional bonus points if the last piece placed on the board was the smallest piece (one square).

Awards & Honours
2008 Gra Roku Game of the Year Nominee
2005 Årets Spill Best Family Game Nominee
2004 Årets Spel Best Family Game Winner
2003 Vuoden Peli Family Game of the Year Winner
2003 Mensa Select Winner
2003 Australian Games Association Game of the Year
2002 Spiel des Jahres Recommended
2002 Japan Boardgame Prize Best Japanese Game Winner
2002 Japan Boardgame Prize Best Japanese Game Nominee