High Quality Content by WIKIPEDIA articles! The simExchange is a web-based prediction market in which players use virtual money to buy and sell stocks and futures contracts in upcoming video game properties. The main purpose of the web site is to predict trends in the video game industry, particularly how upcoming products will sell and how they will be received by the critics. For those who do not participate in the prediction market, the web site is a database of sales forecasts and game quality forecasts that are updated in real-time. The web site also features a number of "Wisdom of the crowd"-type content collaboration and aggregation tools, including means for sharing information, articles, images, and videos about the games.