A 3D screensaver where paper airplanes fly through various tranquil backgrounds

The Paper Pilots Screensaver is a 3D screensaver for your Mac. You can
create up to 20 different screen configurations, choosing various
combinations of airplanes, balloons and scenery.

The planes will perform various stunts including loops and barrel
rolls. All movements are based on true physical laws which is why they
look so realistic.