Rubble
Pull any piece out of the pile. Everything above it collapses. Drop it where it helps, and get the rider to the door — in as few lifts as a computer can.
A real level, solved in par. The door sits on a tower; the tower becomes the stairs.
How it works
A side-on grid with gravity. Loose pieces sit in a pile, a small rider stands on it, and a door is somewhere the rider cannot yet reach. One move is one lift:
- The rider walks first, for free — left and right, up one step, down any drop.
- Lift any loose piece, even from the middle of the pile. Everything that was resting on it falls.
- Drop the piece into a column from the top. It falls until something holds it.
A piece can never land on the rider or bury the door; a move that would is simply refused. You win when the rider can walk to the door. Every level ships with a par: the fewest lifts a solver could find, and the score to beat. Undo is free and unlimited.
One new rule per chapter
The base rules alone go deep: the hardest board found so far needs nineteen lifts. Each chapter then adds one sentence to the rules, and each sentence changes what a good move looks like.
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Stone
Some pieces cannot be lifted, but they still fall when nothing holds them up. You cannot move the anchor, so you sink it.
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Fragile
The rider survives a fall of only one or two cells. The staircase has to work on the way down as well as the way up.
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Coins
A coin buried in the pile has to be dug out and stood on before the door counts. Dig down, then build back up.
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Glass
Glass shatters the moment anything rests on it. Build in the right order, or shatter it on purpose to clear the way.
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Key and plate
The door only opens while the key piece sits on the plate, so the stairs have to leave the key at exactly the right height.
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Local
The rider can only lift a piece it is touching. The rider becomes the hand, and the stool has to come along.
Where it stands
Rubble is in development. There is no release date, no store listing and no browser version yet, and this page will say so until there is.
What exists today is a playable build with a campaign of 114 levels in nine chapters and a daily puzzle drawn from a pool of ninety. Every one of those levels was solved by the solver before it was allowed in, so its par is a proven minimum, not a guess. What comes next is testing on real phones, in real hands.
In the meantime, Boxed In is out now and free to play in your browser.