Paizo continue to support the 3.5 edition of the “world’s most popular roleplaying game” with an organized play campaign The Pathfinder Society, set in the world of Golarion. The campaign follows the adventures of the world’s most notorious group of treasure hunters, vagabond scholars, and thrillseeking rogues – the Pathfinder Society! Your character will be a member of this august society, and usually two new adventures are released every month.

The Grand Lodge of the Pathfinder Society is based in a cosmopolitan city called Absalom – the “City at the Center of the World”. As an independent city state, Absalom is coveted by all the powers of the world. Five rival nations have infiltrated the Pathfinder Society to use it as a cover to retrieve missives, steal objects, and eliminate those who oppose them. Only a minority of Pathfinders are secretly faction members, but in the Pathfinder campaign every player belongs to one of the five factions. You must work together for the Society but you are often at odds because of your faction goals. Life can be very challenging! 

The best place to find out about the campaign and to download the "Guide to Pathfinder Society Organised Play" is here http://paizo.com/pathfinderSociety