You win
Click a column to drop a disc. Line up four of your colour vertically, horizontally or diagonally to win.
About Connect Four
Connect Four is the classic two-player strategy game on a 7-column, 6-row vertical board. Players take turns dropping discs that fall to the lowest empty cell of the chosen column. First to line up four discs in a row — vertically, horizontally or diagonally — wins. If the board fills with no four-in-a-row, the game is a draw.
Pondernook Connect Four runs entirely in your browser. Play solo against three AI strengths (easy is shallow lookahead, medium runs minimax with alpha-beta to depth four, hard goes deeper and weighs centre control), or hand the device back and forth in 2-player hot-seat mode. Connect Four is technically a solved game — perfect play by the first player wins — but among humans it stays interesting because spotting forced sequences four moves ahead is hard. No install, no signup, plays on touch.