Square It is a fantastic game for strategy and visualisation.

Click here to play!

This game can be played against the computer, or against a friend.

Players take it in turns to click on a dot on the grid – first player’s dots will be red and the second player’s (or computer’s) will be blue. The winner is the first to have four dots that can be joined by straight lines to form a square.

Squares can be any size and can be tilted.

For an extra challenge, why not increase the size of the grid using the arrow buttons?