This is one of the best incremental games in the whole jam. I really like the concept, it's pretty funny and I like how the map looks with the dwarf king sitting right under king arthur. The art style and music are also great and the gameplay is very polished imo. Also optimised very well. I didn't want to stop; I maxed out every single upgrade before I decided to. Seeing the dwarves haul the rocks into the smithy which shatters the rocks into ore and smelts them is so goddamn cool. All that's missing is a sound effect while it smelts.
Maybe one thing you should change is regarding goblins; first of all it's very cool early on how goblins run in and steal a bunch of your hard earned rocks and then bugger off. However, imo the sudden change to a green sky doesn't look very good. Maybe a goblin horn could be a good indicator instead? Also it'd be nice if the goblins became a bigger threat the more time goes on, since later on they didn't really pose much of a threat at all (i had so much ore being mined that I couldn't even smelt it all) And then maybe add some purchasable dwarf warriors to fend off these stronger goblins maybe? Lastly, adding an upgrade tree to make the cursor more powerful when manually mining would be sweet
I hope you do continue working on this because it's so good and I really did enjoy it!