Documents research on the impact of computer games on the learning of adults. Computer games and learning are characterized from a series of different theoretical and empirical viewpoints. Both civilian sector and military applications are presented. While effectiveness of game environments to support learning can be documented in terms of intensity and longevity of engagement (participants voting with their time), as well as the commercial success of the games, there is much less solid empirical information about what instructional outcomes are systematically achieved by the playing of...