Connect Four
Line up four of your discs in a row.👆
About Connect Four
Connect Four looks like a children's game and plays like a knife fight once you take it seriously. You drop red discs into a standing grid, the computer drops yellow, and gravity pulls each one to the lowest open slot in its column — first to line up four in any direction, including the diagonals nobody watches closely enough, takes it. The single best opening habit is to fight for the centre column, because more winning fours pass through the middle than anywhere else. Past that, the game is a constant read of threats: block the machine the moment it strings three together, and aim to build a double threat of your own, two ways to win at once, so a single block cannot save it. Stacking discs straight up is often a gift — you may be handing your opponent the square right above. Easy plays casually while Hard grabs any winning move, blocks your lines, and hugs the centre. It runs free in your browser on desktop or phone, wins tallied between games.
How to play
- You drop red discs; the computer drops yellow ones.
- Tap a column to drop your disc — it falls to the lowest open slot.
- Line up four of your discs in a row — horizontally, vertically, or diagonally — to win.
- Choose Easy for a casual game or Hard for a sharper computer opponent.
Strategy & tips
- Play the centre column early — it is part of the most possible four-in-a-rows.
- Watch for the computer getting three in a row and block it before it connects the fourth.
- Set up a "double threat" — two ways to win at once — so a single block cannot stop you.
- Think about diagonals; they are the easiest wins to miss on both sides.
- Do not stack straight up unless it helps — you may be handing the square above to your opponent.
FAQ
Is Connect Four free to play?
Yes — it runs free in your browser with no download or sign-up, on desktop and mobile.
How do I win?
Be the first to line up four of your discs in a row, in any direction: horizontal, vertical, or diagonal.
How hard is the computer?
Easy makes casual moves; Hard always takes a winning move, blocks your threats, and favours the centre.