Originally released on the PS2 late last year, Blokus Club went on to sell 100,000 copies in Japan. Blokus Club brings its brand of block puzzle action to the portable confines of the PSP. To the uninitiated, Blokus Club looks like a mish-mash of Tetris and Othello but it's not so.
Gist: The game is played by four players who start in the corners of a play board that is 20 x 20 squares large. As the game commences, blocks that are segmented into 2-block, 3-block, 4-block, or 5-block shapes are slapped down on the screen from the starting corner. A player has 21 block shapes to choose from with which to lay down on the playfield and are stored in their respective quadrants of the screen for each player. The only rule for positioning a block is that each new segment must be laid down diagonally and contiguous with the previous block.
By ways slow and steady, the players take alternating turns and make their way across the screen while putting down blocks. A player's progress may be blocked by the other players with their own block drops. Although your own blocks cannot be directly contiguous with each other, they can be planted contiguously against an opponent's blocks when creating diagonal matches. As the play board fills up, lack of space becomes an issue for dropping blocks. He/she who uses up the most blocks wins. In addition to the standard Blokus Mode which always features 4-players (COM or wireless participants), there's a Blokusduo mode which pits 2 players against each other and a Bumpy Trot board game mode. «NCS Game Notes»