Blokus Duo is a smaller, 2-player verson of Blokus. It is an abstract strategy game with transparent, tetris-shaped, colored pieces that players try to place onto the board. The only caveat to placing a piece is that it cannot lie adjacent to your other pieces, but instead must be placed touching at least one corner of your pieces already on the board.
The tiles in the Blokus Duo version are made with square holes cut into them that will allow them to be snapped onto square-shaped "nubs" on the playing field. There are also two trays that store the tiles for travel. These trays will cover the board when the game is not being played and fold open in order for players to access the tiles.