◆ Turn-based territory game

Join the dots.
Claim the board.

Draw a line between two touching dots. Close a shape and the ground inside it becomes yours — the bigger the shape, the more it scores. Claim again and you keep the turn.

  • Every claim earns another turn — chains have no limit
  • Lines run straight or diagonal to any touching dot
  • Play a bot, or a friend with a six-character code

Free. No install. Sign in with Google to save your progress.

2–4Players per match
3Board sizes
3Bot difficulties
~5minTypical match

How it plays

Four rules. That's the whole game.

You will understand it in thirty seconds and still be losing to it an hour later.

1

Join two dots

On your turn, draw one line between two touching dots — straight or diagonal, to any of the eight neighbours. Lines may not cross, and claimed ground is sealed.

2

Close a shape

The moment your line completes a closed shape, the ground inside it is yours. Area is the score, so a wide claim beats a tidy little square.

3

Keep the turn

Every claim earns another turn, and there is no cap — string claims together and you can run a whole sequence before anyone else moves.

4

Fence in what someone already claimed

Claimed ground is sealed — nobody draws through it again. But throw a bigger shape around it and it becomes a hole: you score your area minus theirs, and their claim is walled in for good.

What's in it

Everything in the game today

No roadmap promises — this is what you get when you open it.

🤖

Practice against bots

Three difficulties. The hard bot weighs what your reply would earn, and it does not miss free claims.

🔗

Private games by code

Create a game, share the code, they join. No friend requests and nobody to add.

🎛️

Three board sizes

3×3 for a quick one, 4×4 as standard, 5×5 when you want the long game.

⏱️

Turn clock

Online turns run on a 45-second server clock, so nobody can stall a match to death.

🎓

Built-in tutorial

A guided board that teaches the rules by making you draw the lines, not by reading at you.

📈

XP and stats

Every finished match pays XP and tracks your played and won totals.

Why it's different

Not the dots game you played at school

Three rules that change the whole shape of it.

Unlike dots & boxes

Shapes, not squares

Any closed loop counts, not just a one-cell box. Score is the area you enclose, so the interesting move is usually the greedy one.

Unlike most turn games

Territory can be fenced in

A claim is permanent, but not safe from being surrounded. Enclose someone's shape in a bigger one and it becomes a hole inside your territory.

Unlike grid puzzles

Diagonals change everything

Lines reach all eight neighbours, so shapes are triangles and wedges as often as squares — and every diagonal you draw blocks the one crossing it.

Play

Start a game

The full game runs in your browser. Android is on the way.

● Available now

Play in your browser

The complete game — tutorial, bot matches and private games with a friend. Nothing to install, works on phone and desktop.

Play free
Coming soon

Android app

A native build with haptics and offline bot play is in testing now, and will land on Google Play shortly.

Google Play — soon

Questions

Before you start

The things people ask in the first two minutes.

Is Diamonds free?

Yes. The whole game is free to play, and there are no ads.

Do I need an account?

You sign in with Google so your XP and match record follow you between devices. We never see your password, and you can delete your account and its data at any time from Settings.

Do I need someone to play against?

No. There are three bot difficulties, and bot matches work as practice whenever nobody else is around. When you do want a human, create a game and send them the code.

How is this different from dots and boxes?

Three ways: any closed shape scores rather than only single boxes, your score is the area you enclose, and surrounding someone's claim turns it into a hole you don't pay for.

How long is a match?

Around five minutes on the standard 4×4 board. Pick 3×3 and it's over faster; 5×5 runs considerably longer because there are far more legal lines.

What happens if someone stops playing?

Online turns run on a 45-second clock. Let it expire and play passes on; miss two turns in a row in a game of three or more and you are dropped so the match can finish.

Which platforms is it on?

It runs in any modern browser today, on phone or desktop. An Android app is in testing and will be on Google Play soon.

Ready to claim something?

Free, no install, and your first match is about thirty seconds away.