I saw this game and some people in comments said they got it free. how'd they get it free?

I've been playing for a while now, but 95% of the time is dark af, i can't see anything and there are various frame-drops here and there. When there's light it doesn't frame-drop as much and it looks actually really cool! After a while i noticed that shadows looked like they were moving, so i assume its a day-night cycle? Could there be any way of turning it off and/or change the time it takes for the delay? Pretty nice game, btw! It's surprising what only one man can do! I hope there's more updates in t...

Ok. I've been sitting here trying to do something but it wont drill anything, it wont drill downwards. Am i doing something wrong?

This reminds me so much of motherlode which was awesome back in the day and hopefully this came will be somewhat like it. From what i can see it looks like it took a few things from that game and i hope to get the same experience that i did with 'Good old motherlode'...

I randomly float into the air, and the floatyness of the ship is just soooo painful, like it takes 5 seconds just to change directions. When drilling, sometimes it will just stop, and I won't be able to dig down anymore, any ideas why that happens? Also, is it really just digging stuff, then coming back to sell? I've played loads of mining games before, and this is stupidly simplistic. Does it get anymore interesting?...