You are specialists at the CDC/Atlanta where you watch several virulent diseases break out simultaneously all over the world. The team mission is to prevent a world-wide pandemic outbreak, treating hotspots while researching cures for each of the four plagues before they get out of hand.
Players must plan their strategy to mesh their specialist's strengths before the diseases overwhelm the world. For example, the Operations Specialist can build research stations, which are needed to find cures for the diseases. The Scientist needs only 4 cards of a particular disease to cure it instead of the normal 5. But the diseases are breaking out fast and time is running out: the team must try to stem the tide of infection in diseased areas while developing cures. If disease spreads uncontrolled, the players all lose. If they can cure all four diseases, they win.
The board shows earth with some big population centres. On each turn a player can use four actions to travel, cure, discover and build. Cards are used for this but the deck also contains Epidemics...
On the brink:
This expansion to Pandemic includes new event cards, new role cards, rules for five players, and optional game challenges to increase the difficulty, such as the 'Legendary' difficulty level, the Virulent Strain challenge, the Mutation challenge, and the Bio-Terrorist challenge. These challenges can be mixed together to make the game even harder.
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!
Here is a review by Tom Vasel: