Hi there. Like the really smooth graphics and tightly linked sounds. Not obvious what to do from start 'menu' area. Like that menus and playfield are operated the same way, but it should be clearer where to go first. Managed to mine some hematite eventually. I suppose the other side is you get sense of achievement from working things out... tricky balance. Bookmarked for a deeper look later. Good job!
Controls is too hard for me. Need instruction and adding functionality step by step.