Well economies have existed within massive multiplayer online...

Well economies have existed within massive multiplayer online games for a long time, probably since before Runescape (which was my first experience in it). People would pay real money over paypal or whatever for in-game currency or items. If the value is there people will pay for it, or earn from it.

The horse racing ones like DRACE and other gambling games are a pretty simple example of crypto gaming but yeah, it's already taking off but it'll only get bigger which is why I said it would be great if they could get involved somehow.