When most of us get that package in the mail from Amazon or wherever, we tend to throw the cardboard box away. We might keep a few for household items, or to send packages ourselves. But mostly, they ...

Build marble runs in a room with realistic physics. Stack random objects to make a wobbly track and watch the ball roll down! Explore puzzles with unlimited solutions and cozy vibes.

There are few things that can keep a certain kind of mechanically-inclined mind entranced as well as a marble run, and few structures that look as interestingly organic as procedurally-generated ...