High Quality Content by WIKIPEDIA articles! Guild Wars (April 2005), unofficially known as Guild Wars Prophecies, is the first campaign of the Guild Wars series of Action RPGs, developed by the Seattle-based ArenaNet game developer studio, a subsidiary of South Korean game publisher NCsoft. Prophecies introduced players to the world of Guild Wars, known as Tyria, and premiered several elements that are now known as core components of the Guild Wars games.