The Global Climate Change Game combines standard public good and trust games, and gives them an ultimatum twist. It can also be played intuitively, and so is accessible to students with limited economics: initial piloting was conducted as part of an intermediate undergraduate development economics course, and on a final year course in development finance. The game is a fun way to illustrate the incentive for countries to free-ride but goes beyond a simple prisoner’s dilemma by allowing for multiple rounds and the effects of uncertainty, not least arising from rushed negotiation processes.
