Early prototype · free to try

Build calm worlds in motion.

Seeds fall. You place a few planks. Gravity, friction and momentum do the rest — and if you turn the drop into enough speed, the wheel spins and the garden lamp lights.

Play in your browser See how it works

No download No account No ads No tracking About 5 minutes

It is not a marble run

Three things stand between the seeds and the lamp, and all three punish the same mistake: not enough speed. Solve one and you have understood the others.

1

The ravine

The ground is split. Nothing rolls across a gap — a seed only reaches the far bank if the fall has been turned into horizontal speed first.

2

The headwind

A column of moving air stands on the far bank. It pushes a slow seed back out. A fast one carries straight through, and lighter seeds are pushed harder than heavy ones.

3

The wheel

It is undershot, driven from below, and its bearings drag. Mass arriving slowly nudges it and it stalls. Mass arriving fast spins it.

From empty garden to lit lamp

These are not artwork. Your browser is running the real simulation right now and drawing the result, so nothing here can show something the game cannot actually do.

Nothing placed. The seeds fall and go nowhere.
Three planks, angled steeply. Now the seeds are moving.
Across, through the wind, under the wheel. The lamp is lit.

Real physics, not a fake of it

Everything is simulated in metres, kilograms and seconds, with gravity at 9.81 m/s². A solid disc rolling down a slope accelerates at two-thirds of g sin θ, the way a real one does — that is checked by an automated test, against the closed-form answer.

The simulation runs at a fixed 120 Hz behind an accumulator, so a phone drawing 30 frames a second and a monitor drawing 144 reach the same outcome. Your puzzle does not solve differently because your hardware is slower.

Calm on purpose

There is no timer, no score, no lives and no fail state. Walking away costs nothing. You can pause, single-step, or run it in slow motion to watch exactly where a seed loses its speed.

Nothing nags you to come back. There are no streaks to break, and the game will never send you a notification.

What it will never do

  • Ask you to make an account
  • Show you an advertisement
  • Set a cookie or track you
  • Sell a shortcut past a puzzle
  • Use loot boxes or gambling
  • Pressure you with streaks or timers
  • Open a chat or comment box
  • Punish you for leaving

Full keyboard control, high contrast, reduced motion and adjustable text size are built in. They have not yet been through a manual screen-reader or keyboard-only review, so we are describing them as intent rather than as a finished result.

Please read this before you try it

This is an early prototype with exactly one puzzle. It exists to find out whether the idea is worth building, and it may be rough, may change completely, or may be abandoned.

There is nothing to buy and nothing to sign up for. The anonymous feedback form at the end is the entire point of putting this online — honest, unflattering answers are far more useful than kind ones.

The page sets no cookies and loads nothing from any other site. Your settings stay on your device. If you send feedback, we store your answer and the date, and nothing else: no IP address, no identifier.

Five minutes. One lamp.

See whether turning a fall into speed is as satisfying as we think it is.

Play in your browser