A free tic-tac-toe game — play it in your browser, no install. Ancient myths meet chaos theory — 5 cultural themes, 13 Chaos rules, minimax AI, procedural Web Audio music, 18 achievements. Vanilla JS, zero dependencies.
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Controls: M to toggle music
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Open the live demo Source on GitHub⚔ This or That: Tic-tac-toe games
▶ Play Live · Installable PWA · Works offline
Standard Tic-Tac-Toe is solved — but this isn't standard Tic-Tac-Toe.
Five named themes plus a ✦ Random mode that procedurally generates a new palette and symbol pair every time.
Undo (U, ↩ button, or swipe left on the board) works mid-game and right after a game ends — undoing a finished game also takes back its score and stats (achievements already earned stay).
Toggle Chaos mode to activate 1–3 randomly chosen rules each round. Active rules display in a chip bar above the board.
Select Best of 3 / 5 / 7 from the Match row.
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