Looking at the comments I think some solutions to help improve the game would be to add a way to go back to the main area after each zone, add multiple difficulties, and work on the bugs like the shovel getting stuck on rocks. Great game!!
Another suggestion would be custom notifications, i personally only wanna know when i get some gear that i actually keep after refining, and don't to check every little bit when i reach a certain level of diamonds or other gems. and it would work with holymetria's #1 thing (s)he wants.
So for the sake of trying to play quicker how do the x2, x3, x7 and interest effect things. Like is the formula ((investment)x multiplier)x angel investor interest or (((investment)x multiplier)x angel investor interest)x new multiplier etc..
As a person who would rather be listening to youtube that a narrator, i'm dissapointed in the lack of a mute, and while there is an audience who enjoys this type of games, i clearly am not a part of that crowd
A possible idea for a sequel is to use a similar system as now but also have a demon army (or any other generic evil) try to take over towns and build they're buildings from the end of map, so as you move forward so does the enemy till you meet up,and when you do add an invasion mode, since it will be approximately mid-game when the armies meet it will add some more fun. Great Game! work on the AI and you'll have a real winner here!