Solid game, just requires a bit of polishing, but the mechanics are pretty good!
My only advice would be to make it compatible with smaller screens, at first I didnt know what to do as It was zoomed into a certain part in the main menu it was only when I put it in full screen that I could see the "Start" button, in Godot we use control nodes to anchor and they resize depending on screensize (i'm 1152x648 for reference), not sure what the equivalent of such is in Unity, but I'm sure it'd help the consistency of your game's visuals throughout different screen sizes!