Played the demo for a couple hours last night. It's more an intro/tutorial than a true demo, but it was still pretty fun.
One thing I should give a heads-up on is that Beyond Astra is a real-time 4x, like Stellaris or Distant Worlds. Sorry to disappoint the turn-based lovers out there, but best that be made clear now rather than later.
The game is obviously (and unsurprisingly) incomplete, and there's definitely some gameplay flaws present -- which others & myself pointed out in the Discord (and the developer readily acknowledged) -- but thus far it's a solid experience overall. I wouldn't give the game a score or anything at this point, but I will say it's certainly worth continuing to keep an eye on. If Beyond Astra is already this good in (what is essentially) a pre-alpha state, then it should be pretty bloody amazing once it's ready for full release.
Fingers crossed!