For the first game ever and first jam ever, its really good, i love the map a lot, and the concept of the game is interesting.
But there are some rough stuff, the movement and the spam of right click without being able to just hold the left click, hurt my hand. I dont know if anyone else said this, but sometimes i came back to the ore places and all of sudden i had a lot of them waiting for me, probably registered my right click even if i was not there.
Congratulations tho, I hope you keep making games and keep improving, really good start, keep it up!