The author explores the ways in which games can be used to instruct, inform, and educate. The first chapter discusses games in a general manner. The next five chapters present the use of games for improving education, for guidance in occupational choice and training, and for solving problems and decision making in physical and social sciences, government and industry. The last three chapters are devoted to the analysis of games as a thinking tool, to game designing, and to the evaluation of the cost effectiveness of games and their future. Three of the four appendixes discuss the use of games in educational planning. The author indicates that games are effective teaching and training devices for students of all ages and in many situations, because they are highly motivating and can communicate effectively concepts and facts about many subjects. (PT)