Age of Computers (AoC) is an online multiplayer game used in teaching of computer fundamentals in the M.Sc. study in computer science at NTNU in Trondheim, Norway. It supplements traditional auditorium lectures by a rich set of problems in a computer game like environment. The story of the game is linked to the historical periods (epochs) of computers, and the content is organized in rooms or places on a map. A chat window for each historical period is used for communication with other students and teaching assistants.