I just checked. It's an interesting self digging machine. Maybe you should allow players to explore after they are done with that automation quest. The only games that have anything in common to your game are minecraft and starbound, and to me these type of games are all about exploration, farming and cooking, so even thou I am not your targeted audience I admit getting the automation going in the final quest was quite rewarding. I am curious what you are going to do with the tutorial, and if you plan to expand the game in other directions besides automation.