I really like what you’ve built here. Expecially your art, sound effects and animations are incredible! A also think the design is very nice, it’s very clear what you are supposed to do and how you can interact with the environment (like the red outline for resources you can’t yet mine etc). I expecially liked the crafting mechanic with the different gems, it really was something refreshingly different.
The main problem with the game is that there is (really) only one thing to do, and that is grind resources like crazy (which i’ve seen you already adjusted in the new version) and therefore it gets boring quite fast. (In case you’re thinking of expanding the game, you should give the player something else he can do)
PS: I downloaded the desktop version and was noticing the lines between the background tiles, the issue is easily fixable if you use Unity`s Pixel Perfect Camera :)