Box Claim Online
Box Claim is the pen-and-paper classic dots and boxes on a bright little board. Take turns drawing lines; close the fourth side of a box to claim it and draw again. Don't hand over a third side — and when the grid is full, most boxes wins.
Every line is a rounded bar in your colour; a closed box fills with a star tile.
Claiming a box gives you another turn, so chains of boxes can fall all at once.
Late in the game every move gives something away — hand over the smallest chain you can.
The board grows from 3×3 to 5×6 and the computer learns to keep control with the double-dealing trick on higher levels.
Play a friend on one screen in 2 players.
How to play Box Claim
Claim more boxes than your opponent:
- Tap between two dots to draw a line.
- Draw the fourth side of a box to claim it.
- After claiming, draw again.
- Avoid drawing the third side of a box.
- Most boxes when the grid is full wins.
Desktop: Click between two dots.
Mobile: Tap between two dots.
Game modes
| Mode | What changes | Who it's for |
|---|---|---|
| Levels | Bigger boards and a sharper computer as you climb. | Puzzle and strategy fans. |
| 2 players | Two people on one screen, taking turns. | Friends and family. |
Tips for Box Claim
- Early on, draw lines that give no box a third side.
- Count the chains before the safe lines run out.
- When you must give boxes away, give the shortest chain.
- Sometimes leaving the last two boxes of a chain keeps you in control.
- Long chains decide the game — try to be the one who receives them.
Who made Box Claim?
Box Claim was built by crokocat game studio in 2026 — dots and boxes with a computer that learns the chain tricks.
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About this game
- Controls
- Tap between two neighbouring dots to draw a line. With a mouse, a faint line shows where the click goes.
- Supported devices
- desktop, phone, tablet
- Developer
- crokocat
- Genre
- Board
- Release date
- September 2026
- Latest update
- September 2026
Related categories
Frequently asked questions
Is Box Claim free to play?
Yes. Box Claim is free on crokocat with no download and no sign-up — it runs in your browser on desktop, phone and tablet.
How do I claim a box?
Draw its fourth side. You then draw another line.
Why does the computer leave two boxes to me?
It's the double-dealing move: taking them would make you give it the next, longer chain.
How do I get three stars?
Win by at least a quarter of the board's boxes.
Can I play with a friend?
Yes — choose 2 players and take turns on one screen.