This article addresses the use of a massively multiplayer online role-playing game (MMORPG) to foster communication and interaction and to facilitate cooperative learning in an online course. The authors delineate the definition and history of massively multiplayer online games (MMOGs), and describe current uses of MMORPGs in education, including their experiences with constructing and using the MMORPG "Second Life." In addition, the authors detail with practical examples the process of using MMORPGs to support cooperative learning activities, and explore future uses and research questions for using MMORPGs in education and training. (Contains 2 tables.)