🔴

Connect Four

🎮 Click / tap a column to drop your disc. The AI responds instantly.

Drop discs, build a line of four, block your opponent — the classic strategy game reimagined with neon visuals and a built-in AI.

How to play

  1. Click any column to drop your disc — red discs are yours, the AI plays pink.
  2. Build a line of four (horizontal, vertical or diagonal) before the AI does.
  3. Block the AI's attempts while building your own threat — think two moves ahead.

Frequently asked questions

Is Connect Four free to play here?

Yes — it runs entirely in your browser with no download, account or payment. Play against our built-in AI or pass-and-play with a friend.

How does the AI work?

Our AI checks for immediate wins and blocks your threats, with a touch of randomness to keep games interesting. It plays a strong but beatable game.

Can I play with a friend?

Yes — switch to 2-player mode to pass and play on the same screen. Red and blue discs alternate turns.

What's the best opening move?

The center column is statistically the strongest — it participates in more potential lines than any other column.

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Free tools for work time

Between gaming sessions, our sister site ToolTide runs free online tools — percentage calculators, unit converters and live countdowns. No sign-up there either.