Pandemic is a cooperative game in which players work together to combat the spread of four deadly diseases before they overwhelm the planet. Each player brings a distinct skill to bear on the problem; only through careful teamwork can they ultimately save the Earth! 2-4 players, 45-60 minutes.
In some forums I have read that it gets more difficult with more players but I think that with more players you have more special ability cards in a game and hence it gets easier.
I bought the Pandemic base set, and In The Lab, as I saw it plays up to six people. (Though I notice now that's for team play). When I got home, I saw the box says that you need both the base set ...