seems like a very costly game for some nowadays - like the idea though
I think I set the lower limit of what you can place in a QR cache at 500 satoshi. I don't think that will break the bank
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It brings up a great point though... Bitcoin is a miraculous gem in the realm of game micro-transactions. Finite control of pricing as well as a low friction system for getting value in and out of your game system. Monetarily interact directly with your customers and save the horrible transaction fees.