Finally got around to playing this through in 2024. Still holds up well, it's a very solid exploration/survival game, with major emphasis on exploration. Survival elements are mainly there to spice things up somewhat.

Rather strong Myst vibes, except the game isn't as puzzle-centric, and the few puzzles which are there are nowhere near as convoluted as the ones in Myst games or Obduction. Solus is mainly about finding a way to navigate from A to B, collecting things and trying to learn as much about the story as you can. Speaking of story, a few of the reviewers here mentioned that they were underwhelmed by the ending, but I honestly have to say I found it quite fitting.

Great setting and immersion, a few genuinely creepy moments (kind of happy I didn't play this in VR). Not much replayability, since the game is linear, but I enjoyed the few evenings it took me to play this through.