Gamigo is turning that formula on its ear just a bit. The publisher of several free-to-play games (such as Black Prophecy and King of Kings 3) is celebrating its 10th anniversary by giving away some bonuses to players, starting with a chance to get twice as much in-game money.
While each individual game will be getting some more specific promotions in the coming days, every 10th player who purchases money from a game's cash shop will receive double the amount purchased. It's a decent chance to double the size of your in-game wallet at no extra charge, although the promotion is only running for the next 10 days. If you'd had your eyes on a big purchase lately, now might be the time to put down the money -- you just might get lucky.