Pandemic: On The Brink (Expansion)

Pandemic: On the Brink is an expansion to our popular cooperative game, Pandemic, where players take on roles to work together to find cures to 4 diseases.
In this expansion you will find seven new roles; 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: one player plays against the others!
You may also play with 5 players and play on Legendary level!
**This is the 2013 edition, compatible with the 2013 edition of Pandemic**
The base game Pandemic is required to be able to play this expansion.
Content:
7 new Role cards, with matching pawns
8 new Event Cards
8 Virulent Strain Epidemic cards
12 purple Disease cubes
1 purple Disease marker
1 Cure Indicator sticker and card
2 Mutation cards
3 Mutation Event cards
1 Bio-Terrorist location pad
1 Epidemic card
1 reference card
4 blank cards for customizing
5 petri dishes and labels