Jank. I am saying "jank" several times upfront, not because Spacebourne 2 is particularly janky, but because it is a bit, and I want to temper your expectations so you're not unfair on its flaws if you try it after I bang on for the rest of this article about how impressive it is.
There's a dream space game we all imagined, where you pilot a ship freely around the galaxy, landing on planets and space stations and running around them doing stuff, finding things, maybe having a fight, then get back into your ship to launch into space, where you can stop at any time and do a little space walk. Maybe walk around on an asteroid, just because.
Spacebourne 2 isn't the dream. But for a game made, as far as I can tell, by one person, it is an astonishing effort to capture that spirit.