1
Look
Every marble sits on a paper board with walls, holes and, later, pits. Find where each one needs to go.
A calm marble puzzle for Android and the web
Plumb: roll every marble home
Tilt the board and every marble rolls at once. Each one has to drop into the hole of its own colour, and square pits swallow any that wander. One swipe, a whole chain of consequences.
- Free to play
- No timers
- Plays offline
- Never an ad mid-level
Watch
Forty seconds of Plumb
A few levels, the hint, three stars, and one left for you to solve.
How to play
Look. Tilt. Drop.
2
Tilt
Swipe to tilt the board. Every marble rolls at once, until a wall, the edge or another marble stops it.
3
Drop
A marble that rolls over a hole of its own colour drops in. Get them all home in as few moves as you can.
Why it's good
Simple rules, surprisingly deep
One swipe moves everything
Tilt the board and every marble rolls at once, until a wall, the edge or another marble stops it.
Each colour has its home
A marble drops into a hole of its own colour the moment it rolls over one. Plan the route before you tip.
Watch out for pits
Square pits swallow any marble. Undo is always one tap away, so every mistake is a lesson, not a loss.
A hint that shows, not tells
Stuck? The hint previews your next tilt on the board: ghost marbles, dotted trails and where each one lands.
Stars for the perfect route
Every level is solved by a computer to find the fewest moves. Match that par for three stars.
Calm by design
No timers, no lives, no energy. Play offline, at your own pace, with sound, music and vibration you control.
Screenshots
See it on a phone
From the blog
Tips and stories
Seven beginner tips for Plumb
Seven practical tips for new Plumb players: read the walls first, count what moves, park marbles, and use undo to learn a board fast.
Calm by design: why Plumb has no timers, lives or energy
Plumb has no timers, no lives and no energy, and no ad ever interrupts a puzzle. Why we built a game that respects your time, and what that means in it.
How Plumb levels are made: a generator, a solver, no repeats
Behind the scenes: how Plumb's levels are generated, proven solvable, checked so no two are alike, and ordered so the game never gets easier.
Questions
Frequently asked
How do I play Plumb?
Swipe up, down, left or right to tilt the board. Every marble rolls in that direction until something stops it. A marble that rolls over a hole of its own colour drops in. Get every marble home to clear the level.
Is Plumb free?
Yes. Plumb is free on Google Play, and you can also play it in your web browser. The Android app has a few ads, never during play, and a one-time Supporter pack that turns them off.
Does Plumb need an internet connection?
No. Plumb plays completely offline, and your progress is saved on your device. The Android app goes online only for its ads and the Supporter pack, so without a connection the ads simply do not appear.
What does par mean, and how do I get three stars?
Par is the fewest moves that clear a level, found by a solver that checks every possible move. Clear a level in par for three stars; a few moves over still earns one or two.
Ready to roll?
Plumb is free on Google Play and in your browser, with nothing to sign up for.