Oil Tycoon (Jewel Case) - PC Multiplayer action for up to six players via the Internet or a LAN is available, as well as a robust single-player campaign Real-time gameplay, a technology tree, real-life based economics including stock market prices and worldwide rates, tutorials, and three difficulty levels are just some of the features that allow you to become an Oil Tycoon Choose between a real-time mode, where units of time equal one day, and a round-based mode in which you end each turn.