I Earned $100,000,000,000 For Digging 100km Down in Mr.Mine

I just kept digging and digging. When progress slowed I sold all of my ore and upgraded my drill and repeated the process. Eventually I made it over 100km down and was earning so much money that I think I can retire. Or I could keep digging to find out just how far I can go. Luckily when progress slowed I was able to buy myself deeper.
Mr.Mine - store.steampow...
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