Rules:

Players take turns putting 3×3 signs on the free cells of the field (one is always crosses, the other is always zeros). The first one to line up 3 of their pieces vertically, horizontally or diagonally wins. The first move is made by the player placing crosses.

Usually, at the end of the game, the winning side crosses out with a line its three characters (zero or cross), which make up a continuous row.

Just enough to say more. I hope you will like it.

There was a bug with a draw here, if there is a draw, the game will not do anything, and this is wrong. My game file is broken so I can't fix the bug. Sorry...