I'm aware that it is still being developed so ignore the stuff you want to add anyway. First please edit the games itch page, there is a button to allow fullscreen. Second some textures for the ground and a skymap shouldn't be to hard to add (no actual idea how hard that really is, I did mostly 2d stuff in Godot.) Last but not least some music and sound effects would add a lot of game feel. But overall not bad so far.