Pandemic: On the Brink includes new event cards, new role cards, rules for five players, and optional game challenges to increase the difficulty of the Pandemic base game. These new challenges, which can be used individually or combined for even more difficult play, are as follows: The Virulent Strain challenge makes one disease become particularly deadly in unpredictable ways. The Mutation challenge adds a fifth (purple) disease that behaves differently than the original four. The Bio-Terrorist challenge pits one player against the others!
As skilled members of a disease-fighting team, you must keep four deadly diseases at bay while discovering their cures. You and your teammates will travel across the globe, treating infections while finding resources for cures. You must work as a team to succeed. Pandemic is a cooperative game, all players win or lose together. The clock is ticking as outbreaks and epidemics fuel the spreading plagues. Can you find all four cures in time? The fate of humanity is in your hands!