Infected is a quick, strategic, secret role, semi-cooperative social game. One of the party is a Plague Doctor, spreading the Bubonic Plague. The Villagers need to find and rid themselves of the evil doctor before they succumb to the greatest plague in history. The Carrier is an expansion which adds new characters, roles, abilities, and chain reactions. New cards, new dice, and new miniature included. The Plague Doctor now brings his Ravens with him, and they too carry infections. If a Villager receives an infection, they must pass their Raven card on their next turn. Many new roles include abilities to fight against the Plague Doctor and Ravens, including the new Huntress, Blacksmith, Apothecary, Priest, and other Villagers. However, a new powerful Plague Doctor exists, and a new Sinister Villager could even be in your midst. You'll never trust your friends again.