Play Tic-Tac-Toe free in your browser. Easy is a classic 3×3, while harder levels grow to 5×5 and 7×7 against a smarter computer. 2-player mode too.
Tap an empty square to place your mark. Line up 3, 4 or 5 in a row — the bigger the board, the longer the line — to win.
Tic-Tac-Toe — also called noughts and crosses — is one of the oldest games people still play, scratched into Roman pavements two thousand years ago. The rules take five seconds to learn: take turns claiming squares, and the first to line up a row of their marks wins. This version keeps that instant-pickup feel but adds a twist that keeps it interesting long after the classic 3×3 grid runs dry.
The difficulty you pick changes the whole game. Easy is the traditional 3×3 board where three in a row wins. Medium opens up to a 5×5 grid where you need four in a row. Hard stretches to a full 7×7 board where only five in a row takes the win — the same idea behind gomoku. The bigger the board, the more room there is for traps, threats and long-range planning.
The computer gets sharper as the board grows, too. The easy opponent plays loose, casual moves; the medium opponent spots wins and blocks threats; the hard opponent reads several moves ahead, hunts for forks and defends tightly. It is genuinely tough but not unbeatable — out-think it and the win is yours. There is also a two-player mode for sharing one device with a friend.
Players take turns tapping an empty square to place their mark, X or O. The first to line up a full row of their marks — horizontally, vertically or diagonally — wins. If the board fills with no row, it is a draw.
Each difficulty uses a bigger board: Easy is 3×3, Medium is 5×5 and Hard is 7×7. A larger grid gives both players more room to set traps and plan ahead, so the game gets deeper as well as the computer getting smarter.
It depends on the board. The 3×3 Easy board needs three in a row, the 5×5 Medium board needs four, and the 7×7 Hard board needs five in a row — the same goal as gomoku.
Yes, but it will not be easy. The hard opponent looks several moves ahead, takes every win, blocks every threat and sets forks of its own. Beating it takes careful, planned play — but it is not unbeatable.
A fork is one move that creates two ways to win at once. Since your opponent can only block one of them on their turn, the other line wins the game. Forks are the key to beating a strong opponent.
Yes. Choose 2 Players mode and take turns on the same device — one of you plays X, the other O. You can still pick the board size, from a quick 3×3 up to a roomy 7×7.
In Vs Computer mode, every win in a row builds your streak, shown on the board and saved on your device. Each difficulty keeps its own best streak. A loss or a draw resets the current streak to zero, so chasing a new personal best gives you a reason to keep playing one more round.