Four Square is a puzzle game which can be played between two players. Its resembles Tic-Tac-Toe in a way that both games require you to block opponents from completing a shape and at the same time try to complete your own shape.
In each turn players place their color in a block with the aim to complete a square out of four blocks of their own color. Players score for each completed squares. At the end player with most points wins the game.
This game can be played against a bot or another player.