SUNNYDAY / IN DEVELOPMENT
A LITTLE GEOMETRY. A LOT OF GROOVE.

Marble Chimes.

Wind a spiral. Write a melody. Let gravity play.

In-development guided rolling model · 23 offline native-verified rails · no physical validation

0 / 8 commissions
NATIVE SPIRAL STUDIO
Drag to orbit · Scroll to zoom
READY TO MAKE MUSIC

Choose a shape from the offline native rail library, then release a marble.

The final bell is your finish line.
REAL TOOLS, VISIBLE CONSEQUENCES

Built, measured, then played.

Rails were generated and checked offline with native USD BRep. This browser plays verified meshes; it does not run the native engine.

Native tool passport & simulation limits

    This marble follows native curve samples. Timing uses measured length and drop in a frictionless guided rolling model. Decorative bells are browser geometry. The solid swept rail is not a containing tube; collisions, derailment, acoustics and manufactured parts are not physically validated.

    Native manifold, triangle-volume (2.5%) and USD roundtrip (0.1% volume, 0.01 centroid units) checks must pass. Failed builds are kept locally and cannot score.