Learn Plumb in one board: tilt, roll, drop
Plumb's rules, taught by its first real boards: swipe to tilt, every marble rolls until something stops it, and each one drops into the hole of its own colour.
Plumb
Guides, tips and the maths of tilting, from the game where every marble rolls at once.
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The daily Plumb board: one puzzle a day, against the clock
Plumb has a daily puzzle: the same board for every player, a clock in place of stars, and a streak to keep. How it works, and how to get faster at it.
Plumb is out on Google Play
Plumb, the calm marble puzzle where one tilt moves every marble at once, is live on Google Play. What's in it, and where to start.
Every tile earns its place: inside Plumb's level generator
How Plumb's levels are made: random boards, a solver that sets the goal, a test that each chapter's rule matters, and a pass that strips tiles the best route never needs.
Where Plumb's goal comes from, and how to reach it
Plumb's goal is the fewest tilts a solver could find, not a guess. How it is worked out, how stars are counted against it, and a way to reach it more often.
Why four directions go so deep: the maths of tilting
Plumb has only four moves, yet its longest levels take over twenty tilts. How moving every marble at once grows a vast tree of sequences that folds into few positions.
Pits, undo and restart: Plumb lets you be wrong
How Plumb's square pits work, what Undo and Restart give back, and how to use them to explore a board, since a mistake costs one tap and nothing else.
Ghost marbles: what Plumb's hint shows, and why
Plumb's hint draws your best next tilt on the board with trails, ghost marbles and rings. What each mark means, how the solver picks it, and how to learn from it.
Read the roll before you tilt: habits for new Plumb players
Ways of looking at a Plumb board that make levels click: find the stops, judge a tilt by every marble, distrust the easy drop, and ask what each tile is for.