Ultimate Tic-Tac-Toe

Ultimate Tic-Tac-Toe (UTTT) is a free site for playing the game online — live against real people or a bot, right in the browser. Nine tic-tac-toe boards form one grid, and every move decides which board your opponent must play next.

Playing needs no account. Sign in — with email or Google — when you want a rating and a place on the leaderboard; signing in with Google is used only to create your account from your name and email address. Finished games are public and can be replayed by anyone.

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