Behind sealed bio-hazard doors, scientists race against time to sequence diseases and test cures. Take samples and develop cures in the Lab challenge and play on your own or as rival teams (for 4 or 6 players). • Extend the On the Brink challenges with new Virulent Strain Events or the Worldwide Panic Mutation scenario. • Once during your turn, as an action, you may give a City card that matches the colour of the city you are in to a player in any city of the same colour. • Lab Challenge: once per turn, at a research station, you may either Characterize a Disease or Test a Cure as a free bonus action connected to the city you are in. • Once per turn, you may move another player’s pawn in your city, or a city connected to it, by Drive/Ferry. Doing this is a free bonus action.