Question: What setting was used in the generic science fiction role-playing game (RPG) based on the "D6 System",  that was derived from  a role-playing game set in the "Star Wars" universe?

Context paragraphs:
D6 Space: D6 Space is a generic science fiction role-playing game (RPG) based on the "D6 System".  Although derived, in part, from material originally presented in "The Star Wars Roleplaying Game", "D6 Space" is published as a stand-alone rulebook (not dependent upon or requiring other D6 System or Star Wars rulebooks) and is supported by its own line of supplements.

Superworld: Superworld is a superhero-themed role-playing game published by Chaosium in 1983.  Written by "Basic Role-Playing" and "RuneQuest" author Steve Perrin, "Superworld" began as one third of the "Worlds of Wonder" product, which also included a generic fantasy setting, "Magic World", and a generic science fiction setting, "Future World", all using the same core "Basic Role-Playing" rules.  Only "Superworld" became a game in its own right.

Star Wars MUSH: Star Wars MUSH (commonly referred to as SW1) is a text-based online role-playing game.  "Star Wars MUSH" was created in May 1991 and was released to the public in January 1992.  The game predates the majority of ""Star Wars" expanded universe" and as such largely deviates from the established "Star Wars" universe set after "Return of the Jedi".  The game scenario system is based on the discontinued West End Games' .  The game persisted throughout the '90s as one of the net's more successful "Star Wars"-themed MUSHes, earning a feature in "The Incredible Internet Guide to Star Wars".

D6 Fantasy: D6 Fantasy is a generic fantasy role-playing game (RPG) based on the D6 System.  D6 Fantasy is published as a stand-alone rulebook (not dependent upon or requiring any other D6 System rulebook) and is supported by its own line of supplements.

Space Opera (role-playing game): Space Opera is a science-fiction role-playing game created by Edward E. Simbalist, A. Mark Ratner, and Phil McGregor in 1980 for Fantasy Games Unlimited.  While the system is applicable to the whole genre of science fiction, "Space Opera" had a default setting intended to be used as generic science fiction role-playing game rules, the focus being on creating space opera themed adventures.

Universe (role-playing game): Universe: The Role-Playing Game of the Future is a science fiction role-playing game published by Simulation Publications, Inc (SPI) from 1981 to 1983.  It was praised for its innovative and tightly organized rules for such sci-fi RPG concerns as generating planets, applying character skills to in-game situations, and resolving the initial moments of alien encounters; however, it was also criticized for its cumbersome encounter/combat system and its lack of compelling background material.  "Universe" was also noted for its "striking" Interstellar Display, a poster-sized, astronomically accurate map of all stars within 30 light-years of Earth.

Star Wars role-playing games: A Star Wars role-playing game is a role-playing game or role-playing video game set in the fictional "Star Wars" universe.

D6 Adventure: D6 Adventure is a generic role-playing game system based on the D6 System.  "D6 Adventure" is published as a stand-alone rulebook (not dependent upon or requiring any other D6 System rulebooks) and is supported by its own line of supplements.

2300 AD: 2300 AD is a hard science fiction tabletop role-playing game created by Game Designers Workshop, originally offered as an alternative to the space opera portrayed by the company's leading science fiction role-playing game, "Traveller".  In fact it was originally titled "Traveller: 2300", but this caused confusion as the game used neither the rules system nor the setting of the original "Traveller".  The game was therefore renamed in its 2nd edition.

Star Wars: The Roleplaying Game: Star Wars: The Roleplaying Game is a role-playing game set in the "Star Wars" universe, written and published by West End Games (WEG) between 1987 and 1999.  The game system was slightly modified and rereleased in 2004 as "D6 Space", which used a generic space opera setting.  An unrelated "Star Wars" RPG was published by Wizards of the Coast from 2000 to 2010.  Since 2012 the official "Star Wars" role-playing game is another unrelated game, published by Fantasy Flight Games.

Supporting paragraphs: Star Wars: The Roleplaying Game D6 Space
Answer: generic space opera setting