This report destribes the initial steps which have been made in the development of a special gaming-simulation for the Air Pollution Cont rol Institute and its training program for future air pollution professionals. This report describes the kinds of computer operations and decision or role activities developed within the limits of a practical, workable gaming simulation of a metropolitan environment for air pollution control training purposes. The bulk of the report is devoted to a description of intended development of the simulated metropolitan environment, the gamed decision roles, the gamed problems and issues, interactions among roles and with computer simulations, student preparation and support materials, the proposed data system, and future development stages required to complete this gaming simulation so that it can be made an integral part of the air pollution control training program.