Laugh at it but this will happen if Xsyon survives months of stable gameplay. But I think it will not be money as money has no value around lake Tahoe. It will be something hard to obtain but very usefull, like nails for example. I would rather trade something for nails then for money that never had true value (not even now, its worth only paper its printed on minus interesst you own on it to your central bank).

Economy will evolve, nails, small bones, bear brains... Not paper that can not even be used as toilet paper.