Tic Tac Toe IO

Looking for a quick brain game that’s far from basic? Tic Tac Toe IO transforms a childhood favorite into a competitive digital battleground. With clever controls, fun twists, and global challenges, it’s more than just Xs and Os.

How to play Tic Tac Toe IO?

• Click on the cell to place your mark when you play Tic Tac Toe IO.
• Set board size, difficulty, and win condition with just a few taps.
• + / - buttons adjust your timer - don’t blink.

Start Easy or Go Pro

Choose your challenge:

• Easy, for warming up.
• Medium, for real mind games.
• Hard, when you're ready for a real fight.

The AI gets smarter with each level, keeping every round intense and unpredictable.

It’s Bigger Than You Think

Not just a 3x3 grid. You can now play on:

• 3x3 for classic fast rounds.
• 9x9 for chaos and control.
• 15x15 or 21x21 when you're ready to strategize like a grandmaster.

Pick your win condition in Tic Tac Toe IO

• 3 in a row – simple, sharp, fast
• 5 in a row – the full Gomoku-style experience

Multiple modes to choose from

• Online: battles against players across the world.
• Two players: you can make 2 to 4 player splitscreen on the same device - great for parties or family fun.
• Challenge the computer and watch it learn your moves.

Time Pressure: More challenge, more fun

Every turn matters, and you've only got a few seconds to decide. Set the time per move manually and feel the pressure build. Quick thinking equals quick wins.

Let's give your brain a workout!

Based on a classic game every kid has played, Tic Tac Toe IO now brings players a series of exciting and engaging challenges. This isn't your typical Xs and Os, with AI opponents, internet options, and larger boards than you could have ever dreamed. It's time to play longer, plan more intelligently, and think more quickly. Let the most intelligent symbol win when you play Tic Tac Toe IO!