Pandemic is a cooperative board game designed by Matt Leacock and published by Z-Man Games in 2007. Pandemic is based on the premise that four diseases have broken out in the world, each threatening to wipe out a region. The game accommodates 2 to 4 players, each playing one of five possible specialists: dispatcher, medic, scientist, researcher, or operations expert. The game is unlike most board games in that the gameplay is based on cooperation rather than on competitiveness. Through the combined effort of all the players, the goal is to discover all four cures before any of several game-losing conditions are reached.