XO

XO by bar13 is a free browser game with no description and one screenshot — the title being the classic X-and-O shorthand suggests tic-tac-toe, played in its purest-named form. Three in a row, two letters, one screenshot of evidence.

Play the X-and-O classic; win with three in a row.

Mouse – place your mark See the original itch.io page for the developer's control notes.

Corners first — the oldest tic-tac-toe wisdom still wins.

Tic-tac-toe gameplay (XO) Free in the browser Minimal everything From bar13