Plurality

Plurality is a finite territorial game. The game is played on a 13x13, 15x15, or 19x19 board. The concept of territory exist disconnected from concepts like groups or liberty. Territories' ownership depend on the most represented color in their perimeters. On their turn, players drop two friendly stones and one adversary stone as a single orthogonally connected group (a tromino). It is forbidden to make a 2x2 shape of stones of any color configuration. Check complete rules and examples at the game's forums. —description from the designer