How to play

• Discs fall to the lowest free cell in the column you pick.
• Line up four of your colour in a row, column or diagonal to win.
• Every win adds one to your streak and starts a new board.
• A loss or a full board ends the run.
• Press M to play against another person on the same device.

Tips

• The middle column is worth the most: it takes part in the greatest number of fours.
• Watch your opponent every move — blocking is as valuable as building.
• Build two threats at once; a single threat is always blocked.
• Avoid handing the square directly above your piece to the opponent when it completes their four.