Marble on Rails

Marble on Rails is a marble-run simulation with View Mode and Edit Mode. In View Mode, you can watch sample courses and courses you have created, switch between marbles and camera views, and move the viewpoint with the mouse or keyboard.

Create courses

In Edit Mode, you build courses by placing and editing rails, as you would draw in a graphics application. Set anchor points and control points in space to create smooth rails; anchor points must be placed within the white line on the ground. Add preset straight, curved or looped rails, then move anchor points and Bezier curve control points by dragging them. You can also adjust each rail’s bank angle.

The elevator has settings for its position, ejection direction, height and three-way configuration. You can add a straight rail from the current position to the nearest elevator point. For a marble to return to the elevator, the rail must connect to it and the marble must roll toward it. You can test a course by selecting the Test checkbox.

View and cameras

View Mode includes camera switching, ball tracking and random camera switching. When editing, you can set up to five camera positions for use in View Mode. Viewpoint controls include XY, YZ, XZ, SIDE and Reset views, as well as zoom; XY, YZ and SIDE can be pressed twice to show the view from the back. The viewpoint affects the plane on which Bezier control points move, so switching views is part of editing.

Share courses

You can upload the course you are editing to Steam Workshop. Subscribed courses download automatically and can be selected from the Steam Workshop menu in View Mode.

PC version features

Compared with the Android version, the PC version has more accurate physics calculations, which let marbles run more smoothly. It also draws shadows and supports the elevator’s three-way configuration.