Recently - virtual currencies and economies started gaining global interest, due to their impact to the real world economy. Virtual currency “Bitcoin” has became a billion dollar industry by providing people with anonymous money transfers. Businesses that offer to exchange real money for virtual commodities is booming. Currently it’s a multi-billion dollar industry. People are converting their cash into gold coins, health potions, armour, resources etc. But, probably the most important and influential are the in-game economies.