Before revision: sfn|Goggin|2009|p=130 Play money also encompasses virtual currencies in the complex in-game economies of MMORPGs, but again unlike older physical play money, in-game virtual currencies are exchangeable, to greater or lesser degree, with real currency.
After revision: Play money also encompasses virtual currencies in the complex in-game economies of MMORPGs, but again unlike older physical play money, in-game virtual currencies are exchangeable, to greater or lesser degree, with real currency.