暂缺
"Students face problems of the growing world population, and the need for adequate food supply, water, and shelter. Each round of play represents 20 years elapsed time with the resultant population growth, need for resources and necessity for problem solving." Intended for high school use. Materials (for each team): Game board and three plastic maps, representing resources of a nation underground, above-ground and in space; data sheets of each round; technology sheets; markers.