It's getting to hard to increase the 'coin value', I'm making 1 million a day and need 5 million, so I need 5 days to lvl up the coin value o.O.. Please increase the diamond rate.
Maybe you could insert an "Auto Transmute" where you mark the box of which mineral you want to transmute, instead of being clicking on it.
For big quantities of mineral it would be great.
The best thing is when you get the maximum of price at an upgrade, it costs 99999 so is more 'cheap' to keep improving. But anyway before that is very hard to upgrade, you get almost 30k in 5min and all costs more than 50k (after a while), so you only can upgrade once every 5min +/-
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