Calling Swampstar "A brief meditation on the broken swamplands of Louisiana's future." sums it up quite nicely. You can "play" Swampstar for free on itch.io and being called a vignette or micro-narrative there hits the nail on its head, I think.

I'm not entirely sure where to put Swampstar in the ludography of Geography of Robots, like if it is a demo before or along the way the development of Norco, their first full release, but it kinda sets the mood for that nicely with a text monologue over some pixel art.

You press a couple of times to activate and continue the text, multiple choice at the end all leads to the same animation. Hardly two minutes and Swampstar is over. For that reason I won't rate it.

Swampstar seems to have the same melancholic origin as Norco and therefore underlines my understanding the latter is more focused on ambience than gameplay or even a very tight narrative.

It's a bonus, so I take it. It's art, so you can't hate it.