How to play
- Light moves first. Tap the gap between two dots to draw a line there.
- Draw the fourth side of a box and it is yours — a disc marks it — and you take another turn straight away.
- The game ends when every line is drawn (or one side already owns most of the 25 boxes). Most boxes wins.
- Try not to draw the third side of a box: it hands the box to your opponent, often with a whole chain behind it.
- Undo takes back your last turn. Games save automatically — leave and pick up later.
- Online: choose Online friend, create a game and share the code or link. Your friend opens it and plays from their own device.
- Keyboard: arrow keys move between lines, Enter or Space draws.