Played through this game on Steam in a mix of normal ("pancake") mode and VR mode. Aside from the bugs, I really enjoyed it! I would say Firmament is about as easy as Myst - a game I was able to finish without ever checking a guide. (And WAY easier than Riven - a game I had to use a guide for MULTIPLE times.) The story and world building was interesting enough, and I LOVED the ending. Others (who are sharper than me) may have seen it coming, but I didn't. And the final area was stunning in my opinion. Cyan has stated that they wrote the lore themselves, and used A.I. tools to help present the lore to the player, which seems strange but at least it's not as egregious as simply generating all the lore from scratch with A.I. I suppose. (Still bit of a murky area though, especially since some of the art was generated that way.) When I played it, the bugs were SO bad that they had to add a "recover stuck character/reset puzzle" option in the menu screen (something I don't think exists in any other Cyan game). And considering that the puzzles are a major part of the game... it's a pretty bad look. Still, I thought most of them were fun (especially in VR) so I still enjoyed them overall. But your mileage may definitely vary. Firmament is far from perfect, not Cyan's best work, and yet STILL worth a play-through.