A little physics lab
Rube Goldberg physics lab
Build it. Let it roll.
A ball, a ramp, and absolutely no reason to make this so complicated. Move pieces around, add your own, then see what gravity and collisions do.
Workshop floor
Drag parts into the scene. While paused, drag objects to rearrange them.
Ready to tinker. Drag the marble or dominoes, or add something from the parts tray.
Space run / pause
R rotate selected part
Delete remove selected part
Esc deselect
Reset run returns to your last build.