This is the sort of game that I generally enjoy, and I did enjoy playing yours, there were just a couple of issues, but I'm not actually sure whether they are from your end or mine. First of all, graphics wasn't working in Chrome. I just got a pink screen there. But I had that issue with one other game too. So maybe something wrong with my browser, I don't know. Or maybe a recent bug in Godot, that is activated under certain conditions. This is on Linux, mind you. Anyways, the issue is not present in Firefox.
Another issue is that the game seemed to be a bit laggy. I don't see this mentioned in any other comments, so again, maybe I've got issue on my PC. But I haven't had that with any other games so far.
Apart from those, looks like rotation is done in pretty large steps. This made aiming really difficult for me. A smoother rotation would make things a lot nicer imho. Also, a slightly bigger hitbox for picking up minerals would also help.
Sorry if this sounds like a negative review! All over, I think you've submitted a really nice game.