A few years ago, I had a couple dozen hours of good fun with my starter pack just zooming around all those moons and planets, stepping out of my tiny ship and holding my breath, not knowing much about what awaits me outside - scorching heat, a blizzard, hostile or friendly players... it felt like I got my money's worth if space immersion.
If you don't expect much in the way of an actual game, but are content with a few game loops held together by string and duct tape, you can find a vast and pretty universe to explore.
Reeaallyyy gotta manage your expectations, though. It's very much an alpha, and you better not think it's gonna release, like, ever. Disclaimer: I have no idea how it's evolved in the past years.