The game is fun, but a little unbalanced. It is easy to gain more than enough to upgrade the drill high enough to get the COre long before the quest is given.
To the person who claimed "customise" is spelled incorrectly, the developer is using UK/Australian English. Not everyone is American.
This game is really cute, if a little short.
Wonderful, as always. I did notice though, that I am either getting used to these games, or this is slightly simpler than your others. It didn't seem quite as difficult as the previous. Still a great fun game!