Connect Four
Drop discs into the grid and be the first to line up four in a row — across, down or diagonally.
Leaderboard
×2 Points (Medium Game)Sign in and play to compete. Weekly top 10 earn points on the Championship Leaderboard. Resets Mondays 00:00 UTC.
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How to Play
- Choose an opponent: the computer at one of three levels, or a second player on the same device.
- Click a column to drop your disc; it falls to the lowest empty space. Keyboard: Left/Right to choose, Enter to drop, or press 1–7.
- Players take turns. Red always goes first.
- Connect four of your discs in a horizontal, vertical or diagonal line to win. A full board is a draw.
Tips & Strategy
- Control the centre column — it is part of the most possible lines.
- Watch for threats that need two moves to block; block them early.
- Try to create two winning threats at once so your opponent can only stop one.
Frequently Asked Questions
Easy looks two moves ahead, Medium four and Hard six, using minimax search. Hard is tough to beat without a plan.
Best scores are stored only in your browser's local storage on this device. They're never sent to a server, and clearing your site data resets them.
No. The game runs entirely in your browser — nothing to install and no account. Once the page has loaded it keeps working even if you go offline.
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