Who is the owner of a small publishing firm focused on a series of related science fiction role-playing games, the first published in 1977 by Game Designers' Workshop?
Roger Sanger Roger Sanger is an American game designer and the owner of Digest Group Publications, a small publishing firm focused on the role-playing game market and specifically on the game "Traveller".
Judges Guild Judges Guild is a game publisher that has been active since 1976. The company created and sold many role-playing game supplements, periodicals and related materials, but became best known during the late 1970s and early 1980s as one of the leading publishers of "Dungeons & Dragons" related materials. Its flagship product, "City State of the Invincible Overlord", was the first published RPG supplement to feature a fully developed city environment. The supplement was followed closely by numerous ancillary cities, maps, and other materials published by Judges Guild.