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Christopher Sawyer is a Scottish video game designer and programmer. He is best known for creating Transport Tycoon, which has been considered "one of the most important simulation games ever made", and the bestseller RollerCoaster Tycoon series. He began his career in the early 1980s producing small games for Memotech, and developing DOS ports of many Amiga games. From 1994 to 2004 he produced a series of Tycoon games, which became hallmarks of the simulation genre. Wikipedia