Spring

the cat bounces by itself. steer it up the town.

a cat bounces up a whitewashed hillside town on awnings, balconies and washing lines; drag sideways to steer it higher

The cat bounces on its own: anything it lands on from above throws it up again, and it passes through ledges from below. A washing line throws it higher, a brass spring much higher, old roof tiles break under it, and a gull knocks it off. Miss everything and it falls home to the cobbles. One bounce is 5 metres.

Concepts: bounce, gravity.

An interactive you play with one thumb, on Wundr.