Void

An experiment. It might be strange, short, or unfinished.

A desert horizon that follows the real clock. Dawn, noon, golden hour, and night come when they come where you are, and a figure walks toward you across the sand over about eight hours of real time.

Not a game so much as a window. Leave it open in a tab, come back later, and see how far the walker has got. If it stops, try clicking it.