Yes. It runs free in any modern browser on phone, tablet or desktop, with no download and no account. Short optional videos can be watched for extra gems or to continue a run once, but everything — every belt, every metre — is reachable without watching any.

There is one input: tap anywhere on the screen, or press Space or a gamepad button, to drop the sliding floor. That is the entire control set. P pauses. The skill is in when you tap, not what you press — the floor is always moving, and where it is when you let go decides both the cut and the lean.

Because floors landed off-center make it lean. Once the balance system is active you will see the tower tilt and the gauge needle move; past the red edge of the gauge the tower falls. The fix is to land the next floor on the side the tower is leaning away from — centering a drop pulls the lean back toward the middle. Perfect drops also relax the lean a little, so precision is literally stability.

The flag on your tower is the weather report. In the Windy Belt it shows a steady push that makes the floor speed up and slow down. In the Storm Belt it snaps before every gust — a gust you were told about is a timing puzzle, one you were not is a hit. In the Stratosphere there is no wind at all; the floors simply drift slower and every fourth one is gold.

If the sliding floor clears the tower with no overlap, the run ends — unless you have a Safety Net, which bounces the floor back for one more try. A topple from too much lean ends the run the same way. Either way you keep the gems you collected on the way up, your height is scored, and your best is updated if you beat it.

Perfect drops. Land three in a row inside the center guide and each further perfect regrows a slice of lost width, up to your starting width. It is the core risk trade: waiting for the perfect alignment takes longer and fights the wind, but it is the only thing that makes a narrow tower wide again. The Wide Start upgrade raises the width you begin with, permanently.

Yes — locally, in your own browser. Best height, gems and shop upgrades are all saved on your device, and the belts you have unlocked stay unlocked. Nothing is uploaded anywhere and there is no account to make.