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Belfry Stack

Drop swinging stone courses into a bell tower, where every overhang stays on and leans the tower, across 64 belfries in seven chapters.

About Belfry Stack

A one-tap stacking game in a fantasy bell tower. A course of stones swings from the hoist rope and one tap drops it. Nothing is trimmed away: whatever overhangs stays on and pulls the tower's balance toward that side, so a lopsided drop can be saved by leaning the next course the other way.

Seven chapters each add one rule, from the plain Chapel Bell through the mason's uneven courses, narrow footings, heavy oak bell frames and an off-centre hoist to the Great Peal, plus open belfries ranked by height.

How to play

Goal: Raise each belfry to its bell loft by dropping the swinging courses, keeping the weight above every joint over the stone beneath it.
How it ends: The bell is hung when the loft is reached. A course dropped so that the weight above some joint hangs past the edge of the stone beneath topples the tower, and a course left swinging for six swings slips from the rope; either ends the run.
Record: Each belfry keeps your tallest tower and fastest crowning, and a top ten of the fastest crownings; the open belfries, which have no loft, keep a top ten of the tallest towers.

Tap or click the tower, or press Space or Enter, to drop the swinging course. It falls straight down and lands on the course below wherever it is.
The tower stands while, at every joint, the weight of everything above rests over the stone beneath it. Overhang is never cut off, so it shifts that weight: a course hanging out to the left can be balanced by the next one set further right.
The plumb hangs from the centre of the weight above the weakest joint, over a bracket marking the stone that carries it: white is safe, amber is leaning, red is nearly over. While a course swings, its landing footprint turns red wherever a drop would topple the tower.
Oak bell frames are three times as heavy as a stone course, the mason's cart sends courses of different widths, and a course left swinging too long slips from the rope. Pausing takes that run out of the Top 10.

Worked example for Belfry Stack — Worked example. See how the rules apply to a real position.

Controls

Input	Action
Tap · click · Space · Enter	Drop the course
P · Escape	Pause
R	Start the belfry again

Good to know

Your records, settings and progress stay in this browser.

Watch how to play

The rules, then The Chapel Bell 1 played start to finish. Played by an automated player at a person's pace; the narration is a synthetic voice. English captions.