This game quickly becomes addicting once I figured out how each building and all the little buttons worked. Took a few tries, but it was worth it.
One thing that made me very intrigued was how automatically upgrading everything on the drill in the shop did not necessarily make my game play better all the time. When the drill moved too fast, maneuvering it to get everything became impossible. After I bought a new drill and wiped the upgrades, I was able to farm more at my own pace.
UPDATE: It had been several months that I was not able to access my account since V0.7... and it seems I can no longer use that saved data. That sucks since I was so close to endgame! Now I have to start all over again.