Pandemic: On the Brink is an expansion to the popular cooperative game, Pandemic, wherein players take on roles to work together to find cures to 4 diseases.

This expansion includes six new roles (plus 1 revised Operation Expert and a Bio-Terrorist), eight new special events, and several challenge kits to be added to the basic game play.

Virulent Strain challenge: makes one disease become particularly deadly in unpredictable ways.

Mutation Challenge: adds a fifth (purple) disease that behaves differently than the original four.

Bio-Terrorist Challenge: pits one player against the others!

You may also play with 5 players and play on legendary level!

Requires: Pandemic to play
Contents: 6 new Role cards, 8 new Special Event cards, 3 new Challenge kits, 12 purple disease cubes, 12 pawns in a smaller size, petri dishes to store your diseases and pawns, a bio-terrorist pad