it breaks down to the mechanics of the game [..]
I guess I am pretty much against games that use any form of real currency [..]
I agree. Introducing real currencies makes everything different, hell of a lot more complicated, but opens op a whole new world of possibilities too.
Many years ago I read Neal Stephenson's REAMDE, where just this is described, a MMORPG with real currency, and free and easy connection to real-world money. Yes, it's just a novel (a good one), but I think he was up to something there.
if you can buy items with real money (inc btc) it's unfair.. that is the basics of it.. appearance items are ok, but not a Sword of a Thousand Truths which one shots people and only rich people can afford. [..]
That's a problem. So, lets turn this into an opportunity! Like, you may easily (and expensively) buy the "Sword of a Thousand Truths". It costs the awesome amound of 500 gold. To wield it, you have to have an additional 500 gold with you. When wielding it, a huge red arrow points into your direction. Alternatively a huge dollarsign. Or other players can enable, or buy "gold-goggles" for the same effect.
Now when the sword-wielding guy finally is taken down, he drops his gold to be lootet.
What happens? He will kill many many people. Until gangs form and hunt down high-profile players. Goldmules.
This redistributes gold, makes playing possible with no initial bitcoins, makes the game very attractive for, hell, everyone!
And, by "losing" a few percent of the gold each kill/drop/loot you could even finance the whole game eventually.
Oh, use gold and bitcoins, with a slightly floating exchangerate, maybe slightly inflating. Of course the whole new can of worms with the bitcoin exchangerate opens up here.. So, maybe, gold is pegged to USD, with a slight floating and/or inflating exchangerate. Your bitcoins are "just" a method of getting gold in and out of the game, bitpay-style.
By now, after two years this thread is open, I think it's not about Bitcoin in itself or the killeridea how to put Bitcoin into a game. It will all explode once a game with large esthablished playerbase uses Bitcoin (first).
For a newcomer to go viral, it has to measure itself on the big productions, and have Bitcoin as an additional, new, viral component.