Four. Logic game

Complicated tick-tack-toe game is made for those who got tired of the classic version.
The players draw coloured sides of cells in course - each player has his own colour for a game. The purpose of each player is to draw the 4th side of a cell (close it) and put a mark inside the cell (each player has his own mark). You should play attentively - you shouldnt let your opponent close the cell and put his mark inside it

Special features:
-game against computer
-game against your friend on one screen
-large variety of levels