Also, the metal research costs should shift down an order of magnitude. asking for 25M at the start of production is unreasonable compared to asking for 25k.
Needs balancing. Should also probably keep cost of quarry as wood/stone, since it takes quite a white to work up to that much metal and my stone production is horribly off compared to food/wood until I can buy a quarry to keep up.
Could I suggest either a faster RP rate, lower adv tech cost, or the ability to trade $ for RPs (reverse black market...white market?)? I keep hitting a lull around lvl 74 and higher where I've bought everything that is 1 RP and have to wait quite awhile for more RPs to pop. My $ far outstrips my ability to spend it, even in the Trillion range.
It would be good if the mouseover showed the exact price of the x5 and x10 purchases... so far I have to guess at x5 (~10x curr price) and X10 (~20x curr price).
I would suggest an auto-pump upgrade (as an auto-click feature). having it cost money for itself or upgrades to it would make cash feel more useful as well.
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I'm still doing some math on this one :)