Real Cash Economy Games
These virtual currencies are normally in virtual worlds and are earned through playing the game.
Real cash economy games allow you to earn money that you can then spend in-game and/or in real life.
The way these currencies work is by only being worth a percentage of currency in real life. For example, a virtual dollar may only be worth 0.15% of an actual dollar.
These currencies normally have specific dates when you can withdraw, and require a certain amount of money to be obtained prior to being able to withdraw. For example, if you earn $1500 in-game, and the threshold for payouts is $1000, you can withdraw the money at whatever conversion rate the game uses, along with waiting for the cash-out day, typically at the beginning or end of a week/month.
If you are good at games, have a lot of time on your hands, and want to make money; it would be wise to play multiple real cash economy games so that you increase the amount of income you get per game.
I would also advise that you have multiple computer monitors so that multiple games can be played at once to optimize your earnings, and a calendar be created to keep track of withdraw deadlines and to budget your in game and real money.
Most Real Cash Economy Games are Free to Play.