Screenshots
Why Play on Stone Online?
Free to Play
All games are completely free, no hidden costs
No Signup Needed
Jump right in — no account or download required
Real-time Multiplayer
Play with real opponents from around the world
Practice with AI
Sharpen your skills against AI at 4 difficulty levels
Play vs AI
Choose your difficulty level and start playing instantly
About this Game
Play Connect 4 online free — no download, no signup needed. Four in a Row is the classic drop-and-connect game: slide your piece into a column, and the first to line up four in any direction wins. Learn the rules in 30 seconds, finish a game in under 10 minutes. Perfect for a quick break.
On Stone Online, you start playing instantly in your browser — completely free. Warm up against AI bots at four difficulty levels, then take on real players worldwide. No app required, no waiting for opponents.
Released in 1974 as Connect Four, this beloved classic has been mathematically solved — the first player can always win with perfect play. The deeper you dig into strategy, the more rewarding it gets.
How to Play
You play on a vertical board with 7 columns and 6 rows. Take turns dropping your colored piece into any column. Each piece falls to the lowest open spot in that column.
Connect four of your pieces in a row — horizontally, vertically, or diagonally — and you win. If the board fills up with no one connecting four, it's a draw.
Try to control the center column early. Create threats in multiple directions at once. Balance blocking your opponent's sequences with extending your own connections.
Game Modes
Frequently Asked Questions
How do I play Four in a Row online?
Click Play Now, create a room or join an existing one. Once all players are ready, the game starts automatically.
Is Four in a Row free to play?
Yes, Four in a Row on Stone Online is completely free. No downloads, no ads, no subscriptions.
How many players can play Four in a Row?
Four in a Row supports 2 to 2 players on Stone Online.
Do I need an account to play?
You can play instantly with anonymous login. No email or registration required.
No Signup Needed
Start Playing