Nice little game! I actually liked that the ore animations were linked up since it highlighted some ore that I hadn't spotted yet 😆
Potential Improvements/Ideas:
- Being able to hold LMB to continuously mine would be nice (could even be an upgrade)
- The recall upgrade seemed a bit overpowered, might be interesting if that was a single-use upgrade that you could buy multiple times (but you would need a way of always being able to obtain more ore to avoid softlocking yourself)
- Ore Radar upgrade that shows you the direction of the nearest uncollected ore
- More consistent upgrade pricing (I think it's randomly determined at the moment, since there were suspiciously cheap upgrades quite far down the tree)