Above the Floating Mountain approaches space fantasy from a different direction than the bombastic adventures of Star Wars or the melancholic thought experiments of Ray Bradbury's The Martian Chronicles. Instead, this Wanderhome supplement expands on a similar thread as games like the The Outer Wilds and No Man's Sky:

Space fantasy as a particularly surreal road trip.

The supplement provides two sets of natures, mirroring the six-nature-per-set format of the core game.

Cosmic natures are big-ticket Sights To See, natural wonders and geographic oddities transposed onto an outer space as imagined by Jules Verne. Space above the Haeth remains inhospitable in the way a desert or particularly tall mountain is--certainly a challenging place to travel through, but nothing a handmade spacesuit and a guide couldn't help with. Wanderhome is largely about walking, and this supplement is no exception.

The orbital natures, meanwhile, hold up the ephemera of the road trip itself: rest stops, villages in the middle of nowhere, and shuttle buses. A party can absolutely take a journey into the space simply by hitching rides and jumping from town to town, each stop at a floating world as much a place as the strange and the grand.

There is an alternative though, in the Cosmonaut playbook. The Cosmonaut themself is a wanderer, familiar with the roads between the stars but rooted to no place in particular. They can always point out something new, and with some time, find kindness wherever they go.

But they also have a space camper-van. It is a kith and a nature, a place and a character in its own right. The vessel grows with the Cosmonaut, but it also carries marks from everyone who travels in it--for each playbook in the core game (and a few extra playbooks from out and a about), this supplement suggests ways they can make their own mark on the Cosmonaut's vessel.

No one travels alone in Wanderhome, and the Cosmonaut's arc orbits around that theme.

When it is time for the Cosmonaut to leave, other characters can leave with them. Their journeys together continue together, but outside the scope of this particular story.