Tic Tac Toe
Three in a row wins it. Play against the computer, from an easy opponent up to one that literally cannot be beaten, or hand the device to someone else for a real match.
How to Play
- Pick vs Computer or 2 Player.
- Against the computer, choose a difficulty — Easy plays randomly, Medium plays reasonably well, Hard is unbeatable.
- X always goes first. Tap an empty square to place your mark.
- Get three in a row — across, down, or diagonally — to win the round.
- The scoreboard keeps a running tally across rounds until you reset it.
Game Features
- A genuinely unbeatable Hard mode, built on the same minimax approach used in real game-theory analysis of tic-tac-toe.
- Medium mode plays smart enough to catch obvious wins and blocks, without being flawless.
- 2-player mode for passing the device back and forth with someone next to you.
- The winning line highlights automatically the moment three line up.
- Running scoreboard for X, O, and draws that persists across rounds in the same session.
Frequently Asked Questions
Can I play against a friend?
Yes, 2-player mode lets two people take turns on the same device.
How smart is the computer opponent?
It depends on the difficulty: Easy moves randomly, Medium takes obvious wins and blocks but isn't flawless, and Hard calculates the optimal move every time.
Is there a way to beat Hard difficulty?
No. Hard plays perfectly, so the best a perfect opponent can do against it is force a draw.
Can I play on mobile?
Yes, tapping a square works the same as clicking it on desktop.
Does it keep score across rounds?
Yes, wins for X and O plus draws are tallied until you start a new match or switch modes.
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