But there are problems with using a real currency in a game discussed elsewhere in the forum. Did you though about solving them? How elaborated is your economy project? It's not simple to design an economy.
I've read about them, of course - hence the "or closely tied to" part. I do not believe the issues raised within that thread to be a major problem. ( I think the answer lies in carefully worded TOS agreements, etc...) If they become obstacles, then it's as simple as buying in-game 'tokens' with bitcoin. (Or paying for the game with bitcoin, whatever...) Problem solved. The economy is not too elaborate, but the game itself is, which is why it's a multi-year project of mine. Besides, if Helicopter Ben and Turbo Timmay can run an economy (into the ground...), what's stopping me?
I'm not going to go into my project much further, as I hate thread jacking - I only brought it up to say that I've made games/large applications in these languages before and would like to help with anything I find interesting and using a language which I also like - and that furthers bitcoin of course!