Great Game – Gold Digger - the best clicker Review

I like game and would give it 5 Stars, but leveling up my pickaxe doesn’t seem to do anything. I have it at level 3 and still it only gives me .01 nuggets per 1 or 2 strikes. Meaning if I have 171.01k nuggets than after one to two clicks I will have 171.02k. And after about 100 clicks I will have 172.00K. Shouldn’t it be .03 nuggets per click at level 3, basically 3x as much?
Review by J.L.Mellor on Gold Digger - the best clicker.