How to play
- Draw one loop along the lines between the dots. It can’t cross itself or branch.
- A number says how many of its square’s four sides the loop uses. Blank squares can use any number.
- Tap between two dots to draw a line. Tap again for ×, and once more to clear it. Drag along the dots to draw several lines.
Keyboard: arrows move, shift + arrow draws a line, alt + arrow marks ×.
Learn the logic behind it
Play unlimited Slitherlink