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SMALL GAMES. BIG JOY. / EST. 2026

Explore 42 puzzles, arcade games, music and illustrated adventures.
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Device & layout

All games support computers. Phone labels help you choose a comfortable layout.

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THREE MAKES A LINE

Tic-Tac-Toe

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YOUR BOARD GUIDE

About Tic-Tac-Toe

Tic-Tac-Toe is a compact way to practice spotting immediate threats and double threats. On a small board, every square belongs to several possible lines. Before attacking, check whether the other player can finish a line next turn. Then look for a fork that creates two winning opportunities, or test your defense against the hard computer opponent.

Your goal: Place three of your marks in a row before your opponent, or block their threats to secure a draw.

Devices and phone layout

Phone friendlyPhone: Either orientation

Computers are supported. Phone orientation is a recommendation; rotation is never required.

Tap an empty square. AI practice and local two-player work on one shared touchscreen.

Tic-Tac-Toe tips

  • Check for an available win and an opposing immediate win before choosing another move.
  • Look for forks where one move creates two lines that each need a different block.
  • Use a corner or the center to keep several future line options open.

Common mistakes to avoid

  • Finishing a setup for your own line while allowing the opponent to win immediately.
  • Expecting a win against perfect defense when a draw is the correct outcome.

Questions about Tic-Tac-Toe

What does Hard AI do differently?

Hard mode searches the complete game tree with Minimax. Easy mode sometimes chooses a random legal move instead of its best move.

Can two people use the same board?

Yes. Choose Local two-player to alternate X and O on one device. X moves first; a full board without a line is a draw.

Try these next

Entry costs are shown before you start. Arcade points are separate from in-game scores and resources. Check the available play and continue options on this page.