Place a dot on an empty grid intersection so that your dot completes a straight line of five consecutive points. Lines can be horizontal, vertical, or diagonal. Each completed line is worth 1 point.
After you score a line, some of the dots used in that line become “spent” in that same direction, so you can’t score another line reusing the same interior dots in that direction.
How to play (step by step)
Scan the board for places where a single new dot would complete five in a row.
Click that empty intersection to place your dot.
If your dot can complete multiple lines, yellow markers appear. Click one of the yellow markers to choose which line to claim.
The chosen line is drawn, your score increases, and your new dot is numbered to show move order.
What the colors mean
Existing dots
Your just-placed dot (selection mode)
Clickable choices when more than one line is possible
Hint spots (press Q)
Lines are drawn like this on the grid.
What counts as a valid move
Your new dot must be one end of a straight five-cell chain. The four cells between the two ends must already contain dots.
Lines can be horizontal, vertical, or diagonal (both / and \ directions).
After a line is scored, the three interior dots of that line become “used” in that direction and can’t be reused to score another line in the same direction. Endpoints can still be reused, and dots can be used in other directions.
The board zooms out automatically when you build near the edges so everything stays visible.
Controls
Click: Place a dot, or choose a line when yellow markers are showing.
Hint: Click “Hint (q)” or press Q to highlight all valid placements with faint circles.
Back: Click “Back (z)” or press Z to undo your last completed move. If you’re currently choosing between options, Back cancels the selection.
New Game: Start over and reset the board.
The Back button appears after your first scored line. Keyboard shortcuts: Q for Hint, Z for Back.
Scoring, Game Over, and Leaderboard
Score = number of lines you have completed.
Game Over when there is no empty adjacent cell (around any existing dot) where placing a dot could complete a five-in-a-row. You’ll see an overlay with your final score.
Save your score by entering a name in the overlay. Best scores are stored locally in your browser (they’re not uploaded). “Clear results” removes them from this device only.
Tips and strategy
Create multiple “four-in-a-row” threats so one placement yields several scoring choices.
Remember: interior dots used to complete a line in one direction can’t be reused for another line in that same direction. Plan around those future constraints.
Use Q early to learn which spots are actually playable.
Build toward the center for more branching options; expand outward only when it opens new lines.
FAQ
Why can’t I place a dot here?
That spot won’t complete a straight five-in-a-row using existing dots. Use the Hint (Q) to see all valid placements right now.
I clicked but no line appeared — what happened?
Your dot creates more than one possible line. Click one of the yellow markers to choose which line to score.
Why can’t I score a second line through the same dots?
After you score a line, the three interior dots are marked as used in that direction and can’t be reused to score another line in the same direction. You can still create lines that cross in different directions.
Where are my scores saved?
In your browser’s local storage on this device. Clearing results only affects your device.