72 is awesome! thanks for the honest feedback, btw if the loop's fun enough i'm thinking of taking this from prototype to a full release, so comments like this really help.
Sometimes the merging of 3 of the same doesnt happen until you buy something else, which if you dont have any coins left means you cant upgrade what you have just bought
thanks!! that's actually a real bug — merging was only checking on shop buys, not on drag/upgrade. fixed now, should merge instantly whenever you hit 3.
