Flight simulators tend to run after filling up space with details and objects. What about enjoying "nothing" and seeing that it can be beautiful... for a while.
Here is a selection of some deserts around the world:
(Just click on the picture or title to directly fly there)
Arabian Desert - Yemen (Take-off from AL BADIE - OYBA)
Sahara - Algeria (In flight)
Simpson Desert - Australia (In flight)
Tadrart Acacus - Lybia (In flight)
Antarctica (In flight)