The rules
- A clue lists the runs of wall cells in the eight cells around it — 1 3 means a run of one and a run of three, apart.
- The wall is one piece: every wall cell connects to every other, up, down, left or right.
- No 2x2 block is wall all over, and a clue cell is never wall.
How to play here
Tap a cell to build wall, and tap again to take it back. Press and hold a cell to mark it free. Drag to mark several cells in one stroke.
Three ways to play
Campaign
Chapters that start gently and bring in one new idea at a time.
Daily puzzle
A new board every day, the same for everyone. Solve every one in a month and that month's trophy is yours.
Endless
Keep going as long as you like, in Easy, Medium, Hard and Expert.
Common questions
Is Murus free?
Yes. You can play here without paying and without an account. Ads keep the lights on.
Where is my progress saved?
In this browser, on this device. If you clear the site data, your progress goes with it. A free Solvarium account keeps it safe.
Does it work on a phone or tablet?
Yes. It runs in any current browser on phones, tablets and computers, and the board resizes to fit the screen.
Does every puzzle really have one solution?
Yes. Every board goes through a solver before it ships, and anything with more than one solution is thrown out.