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About Connect Four
Free online Connect Four (Four in a Row). Play two players on one device or against a smart AI opponent.
Connect Four - also called Four in a Row - is a classic connection game for two players. It is officially a solved game: the first player can always force a win with perfect play. Our Hard AI uses a minimax search with alpha-beta pruning to play strategically, spotting winning lines and blocking yours several moves ahead. Two people share one device pass-and-play style - and across distance, a video call works fine: share the screen and drop discs in the columns your opponent calls out.
Frequently asked questions
How do you win Connect Four?๏ผ
Be the first to get four of your own discs in a straight line - horizontally, vertically, or diagonally - anywhere on the 7-by-6 grid.
Does the first player have an advantage?๏ผ
Yes. Connect Four is a solved game and the first player (Red here) can force a win with perfect play, usually by controlling the centre column.
Is this Connect Four free to play?๏ผ
Completely free, with no accounts and no downloads. It runs in your browser on phones, tablets, and computers.
Can two people play together?๏ผ
Yes - pick 2 Players mode and take turns dropping discs on the same device. Playing long-distance? Share your screen on a video call and tap the column your opponent names - columns are easy to call out, which makes Connect Four one of the better board games for calls.
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