A commodities options trading game is provided in which the simulated market, which determines whether the value of the simulated commodities options rise or fall, is determined by a real event occurring outside the game being played. In a preferred embodiment, the event from which the simulated market is derived is a real-life sporting event, such as a professional basketball, football, or baseball game. Preferably a host calculator or computer generates the initial option prices and displays the information to a plurality of player stations. After play begins, the host computer updates the options prices using formula based on the current score, time remaining and a other empirically determined factors. The players buy and sell options in response to the momentum of the market. At the conclusion of the sporting event, the options are cashed in for their intrinsic value and the player with the most accumulated wealth is declared the winner.