[2019] Underground is empty, most of my ore comes from merchants.

Thanks for the feedback. I'll throw that into this week's update and try to make ore a bit easier to find! :)

I don't think I'll make more ore spawn, but ore spawn in bigger clumps or more realistic veins. Not every map generates with all the resources right on the surface, so I understand the frustration there. With bigger veins, you'll be able to follow them and mine out way more ore.

Yea, again, it's largely dependent on rng of ore spawning. Sometimes there's a lot on the surface and you're off to the races. I'm going to make some changes to guarantee surface ore to avoid issues with finding ore based on just rng.