Very curious art style, reminiscent of older "3d" games.
The game could do with some kind of tutorial or onboarding, restarted 3 times to figure out what i was supposed to do, until i found that the ore processor building is the key to getting enough resources at the start.
One thing that needs fixing; putting two collectors to close to each other causes resources to get stuck between them.
Besides that; Cool music, nice art style, always love a nice tower defense game. Theme is present in lore.
Well done, had fun.