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CONNECT 4

Connect 4

Drop a disc, land four in a row. Play the computer, share the keyboard with a friend, or open a room and send the code to somebody. The board size is yours — the classic 7 by 6 is the default, not the rule.

🤖 vs Computer Three difficulties. Hard searches about twelve moves deep — very hard to beat, and still beatable.
👥 Local Versus Two players, one device. Red moves first, then alternate — the board tells you whose turn it is.
🌍 Online Versus Open a room, send the four-digit code, and play across devices. The server holds the board, so nobody can cheat.
Turn Red
Mode —
Board 7 × 6
Discs 0
Opponent —

Click a column, or press 1–9 · ← → and Enter · R restart · U undo · H hint

Settings

Board size

Anything from 4 to 12 each way. Four is the smallest board that can hold a line of four at all, so it is the floor rather than an arbitrary limit. The size applies to your NEXT game; online, the player who creates the room chooses it and the joiner is told before they commit.

Play

Record

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Red wins