Project Bluebook lied to you. Although sightings of UFOs have increased since that fateful crash in Roswell, aliens have been on Earth for longer than we could have imagined. This supplement for the Conspiracy X 2.0 roleplaying game details the history, culture, biology, psychology, and technology of three distinct alien races (Grey, Atlantean, and Saurian), plus rules for creating alien Cast Members, details on powerful alien technology, weapons, equipment, and starships, and a complete chronology of alien activity on Earth.