Click any column to drop your colored disc. It falls to the lowest empty spot in that column. Red goes first.
Players alternate between Red and Yellow, dropping one disc per turn. Think strategically about both offense and defense.
The first player to connect four discs in a row — horizontally, vertically, or diagonally — wins the game! If the board fills up with no winner, it's a draw.
Q: How do you win at Connect 4?
A: Connect four of your discs in a straight line — horizontally, vertically, or diagonally. The line can be in any direction.
Q: Can I undo a move?
A: Yes! Click the Undo button to take back the last move. You can undo multiple moves as long as the game hasn't ended.
Q: What happens if the board fills up?
A: If all 42 cells are filled and no player has connected four, the game ends in a draw. Click New Game to play again.
Play Connect 4 online for free. The classic two-player strategy game where you drop colored discs to connect four in a row. Features animated disc drops, win detection in all directions, undo support, and a clean retro interface. No download or sign-up required — play directly in your browser.