Each level shows three silhouettes — front, side, top. Build a 3D object in the chamber whose shadows match all three at the same time. The green tick on the Resolution bar shows your current target — hit it on every axis and the level resolves.
Open the Chambers menu to switch between Easy (82%), Normal (88%), and Hard (94%). Your choice is remembered between sessions.
Click a piece to select. Drag the colored gizmo to transform it. Drag empty space to orbit the camera. Scroll to zoom.
Tap a piece to select it. A coloured gizmo appears around it.
Drag the gizmo handles (red · green · blue arrows or rings) to move, rotate, or scale — switch tool with the Move / Rotate / Scale pills in the toolbar.
One-finger drag on empty space orbits the camera. Pinch with two fingers to zoom in or out. Two-finger drag pans.
Spawn pieces from the Spawn pills at the bottom. Remove the selected piece with the floating Delete button. Pick chambers and difficulty from the Chambers menu in the header.
three circles. begin with the sphere — it casts the same shadow from every angle.