The University of Virginia (UVA) Bay Game is a large-scale participatory simulation based on the Chesapeake Bay watershed. The game allows players to take the roles of stakeholders, such as farmers, developer, watermen, and local policymakers, make decisions about their livelihoods or regulatory authority; and see the impacts of their decisions on their own personal finances, the regional economy, and watershed health. It is an adaptable educational and learning tool for raising awareness about watershed stewardship anywhere in the world; a tool for exploring and testing policy choices; and a tool for evaluating new products and services.

The UVA Bay Game provides players with a new sense of individual and collective agency, and game play records suggest new directions for research in behavior change and policy development. The UVA Bay Game also has a global reach, through development of simulations for other watersheds, such as the Murray-Darling Basin in Australia.