Seven columns, six rows and two colors of discs. Four in a Row unblocked is the classic vertical line-up game, where every disc you drop falls to the lowest open slot and every move can set up or block a win.
This version is from Christopher Müller's PaperGames set and uses plain black and white discs that are easy on the eyes. Play a friend on the same device or test yourself against the computer.
How to play Four in a Row
Black always moves first. On your turn, pick a column and your disc drops down until it rests on the disc below or the bottom of the grid. A column that is already full cannot take more.
Make a straight line of four of your own discs to win. The line can go across, up and down, or on either diagonal. A completely packed grid with no winner ends in a tie.
To face the computer, choose your color and a level of Easy, Medium or Hard, then start a new game. Undo takes back your last move, and Resign ends the round right away.
Controls
| To… | Keyboard | Mouse | Touch |
|---|---|---|---|
| Drop a disc | Arrow keys to reach a column, Enter to drop | Click any cell in the column | Tap any cell in the column |
| Pick a game mode | — | Click "2 Player (local)" or "vs Computer" | Tap "2 Player (local)" or "vs Computer" |
| Start a game against the computer | — | Choose a disc color and level, then click "New game" | Choose a disc color and level, then tap "New game" |
| Take back your last move | — | Click "Undo" | Tap "Undo" |
| Give up the current game | — | Click "Resign" | Tap "Resign" |
Tips
- Play through the middle. More winning lines pass through the central column than any other, so a disc placed there helps the most.
- Set up a double threat. If you have two spots that would each win, your opponent can only cover one of them.
- Look one row up. Before you drop, check whether your disc lets your opponent land on a winning square right above it.
- Watch the diagonals. Diagonal lines are the easiest to miss, both for you and for a hurried opponent.
- Learn on Medium. Easy plays randomly, while Hard searches deep. Medium is a good place to practice spotting threats.
Four in a Row questions
Can two people play on one device?
Yes. Choose 2 Player (local) and take turns on the same screen. The status line shows whose turn it is.
Does Undo work against the computer?
Yes. It takes back your last drop along with the computer's reply, so it is your turn again.
Can I let the computer go first?
Yes. Black always opens, so pick white before you start a new game and the computer will make the first drop.
