i upgraded the drill thinking it would drill faster or drill through the white blocks, but there was no noticeable change. seems like that was a waste of an hour to earn the upgrade.
I just got my reply from the game admin...
"The drill upgrade isn't programmed, but i forgot remove the button. I will refund all drill upgrades in the next 24hours."Note: I have upgraded all other stats in my account without any problems. Wait to upgrade your drill until I announce that it is ready.
