Tic-Tac-Toe
The timeless 3-in-a-row duel — take on an AI that never loses, or dial it back to casual.
About this game
Tic-Tac-Toe gets a neon makeover with a twist: the opponent thinks several moves ahead. Play X against an AI powered by the minimax algorithm, which exhaustively searches every possible line of play to guarantee it never loses on Unbeatable mode — the best you can hope for is a draw. Prefer a lighter challenge? Switch to Casual mode, where the AI occasionally drops in a random move, opening the door for a real win. Every square is a fully accessible button, so you can play by clicking, tapping on mobile, or navigating with Tab and confirming with Enter or Space. Win, lose, or draw, the three winning cells light up with a glowing cyan pulse and a result banner appears with a one-click Play Again button to jump straight into a rematch. A persistent scoreboard tracks your wins, losses, and draws across sessions, so you can watch your record build as you try to outsmart the machine. Rendered on a dark violet-and-cyan theme with glowing X and O marks, it is a compact, endlessly replayable strategy game that rewards careful thinking over luck.
Controls
Click or tap a square to place your X. Get three in a row. Tab to a square, Enter or Space to play.
How to play
You play X and the AI plays O, taking turns filling the 3x3 grid.
- Be the first to line up three of your marks in a row, column, or diagonal before the AI does, or force a draw.
- Then hit Play Again for a rematch.
Details
- Category
- Board
- Platform
- Web browser
- Rules
- Full rules
- Price
- Free
- Tags
- classic strategy vs computer
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