Infinite
Tic-Tac-Toe
Play tic-tac-toe online free with unique Sliding and Expanding modes. Challenge players worldwide in ranked multiplayer matches.
Multiple Modes
Sliding mode where marks disappear, or Expanding mode with growing boards
Online PvP
Real-time matches against players worldwide with WebSocket technology
Ranked Play
Climb the ladder, earn ranks, and compete for the top spots
Free Online Multiplayer Tic-Tac-Toe
Infinite Tic-Tac-Toe (Infinite TTT) is a free, browser-based multiplayer tic-tac-toe game with two unique modes — Sliding (marks disappear after three placements, eliminating draws) and Expanding (board grows from 3×3 to 5×5 across rounds) — plus ranked Elo matchmaking, AI practice bots, friend challenges, private rooms, live spectating, and match replays.
Sliding Mode
Dynamic 3×3 board — marks slide off after three placements. No draws, ever.
Expanding Mode
Board grows each round from 3×3 to 5×5. Win N-in-a-row on an N×N board.
Frequently Asked Questions
- What is Infinite Tic-Tac-Toe?
- Infinite Tic-Tac-Toe (Infinite TTT) is a free, browser-based multiplayer tic-tac-toe game with two unique modes — Sliding (marks disappear after three placements, eliminating draws) and Expanding (board grows from 3×3 to 5×5 across rounds) — plus ranked Elo matchmaking, AI practice bots, friend challenges, private rooms, live spectating, and match replays.
- Is Infinite Tic-Tac-Toe free to play?
- Yes. Infinite Tic-Tac-Toe is completely free to play in your browser with no download or account required for casual matches. Optional sign-in unlocks ranked play, friends, and profile stats.
- How is Sliding mode different from regular tic-tac-toe?
- In Sliding mode, each player can only have 3 marks on the board at once. When you place a 4th mark, your oldest mark disappears. This prevents draws and creates dynamic, fast-paced games.
- Can I play tic-tac-toe online with friends?
- Yes. Create a private room, share an invite link, or challenge friends directly from your friends list. You can also play ranked or casual matches against random opponents worldwide.
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