Connect Four

Play Connect Four online free against the computer. Drop your red discs into a seven-column grid and race the bot to line up four in a row. Easy to learn, satisfying to master, and playable on phone or desktop with no download and no sign-up.

How to play

• You play the red discs; the bot plays yellow.
• Click a column, or press keys 1–7, to drop a disc into it.
• Each disc falls to the lowest free slot in that column.
• Line up four of your discs in a row — horizontally, vertically, or diagonally — to win.
• Block the bot whenever it has three discs threatening a fourth.

Controlling the centre column is powerful because it takes part in the most possible winning lines. Look for double threats — a single drop that opens two ways to make four at once — since the bot can only block one of them.