Lemonade Stand is a business simulation game created in 1973 by Bob Jamison of the Minnesota Educational Computing Consortium . In it, the player moves through several rounds of running a lemonade st beginning each round by making choices dependent on their current amount of money about their stock, prices, and advertising. In each round, the results are randomized based on the player's inputs, as well as affected by random events such as thunderstorms and street closures. Each round ends with a summary of the player's current status, and the game ends after 12 rounds.