The Information System for Vocational Decisions (ISVD) places Boocock's (1967) Life Career Game in the core of its operating system. This paper considers the types of interaction that will be required of the system, and discusses the role that a career decision game might play in its total context. The paper takes an into-the-future look at the day when an artificial intelligence system guiding simulated counselor, teacher, and career generator systems becomes a feasible programing task. Toward this ultimate goal, the author proposes to start with the career decision game, and to develop the full system as a series of increasingly complex modifications of its basic format. The game in its present form is described and its use as a miniature model for the entire system of interacting simulations (teacher-student, counselor-client) is discussed. (TL)