This unit consists of a four-part game designed to provide students with a basic understanding of four possible interactions between animal populations. Management of the white-tailed deer, one of the most abundant large wild animals in Missouri, is the central focus of the game. Included with the unit are: (1) unit objectives; (2) pre-game preparation instructions; (3) instructions for each part of the game; (4) enrichment activities; (5) a glossary; (6) a quiz (with answers); (7) lists of visual aids and references; and (8) appendices. The appendices include background information on the white-tailed deer, a list of Basic Essential Skills Test objectives (for reading/language arts, mathematics, and government/economics) covered by the unit, playing pieces, and lists of conservation education consultants and outdoor skills education specialists in Missouri. The game is ideal for teaching: carrying capacity; communication skills; conservation; decision-making; ecology; food chains; food webs; quantitative thinking; resource management; scientific understanding; social science processes; and wildlife management. Recommended audiences include science classes, social studies classes, vocational agriculture classes, upper elementary classes, in-service teacher groups, environmental organizations, scout groups, summer camps, 4-H clubs, and adults. (JN)