D6 System
The D6 system is, as the name suggests, a roleplaying system built around the humble yet mighty D6. It is published by West End Games, and is generally used for pen and paper games but can also be used for LARP and war games.
In 2009 West End Games released many of the generic D6 books under the OpenD6 OGL. In 2016 Nocturnal Media acquires WEG and the D6 System trademark.[1]
List of games using the D6 system
No, I haven't heard of most of them either.
- The Star Wars Roleplaying Game (Holy shit this has a lot of supplements. I mean, fuck me.) (and it was actually pretty fucking great for casual star warsy fun)
- Ghostbusters: A Frightfully Cheerful Roleplaying Game
- Men In Black (fuck yes)
- The Hercules & Xena Roleplaying Game
- DC Universe
- Metabarons
- Psibertroopers
- Godsend Agenda D6 (They can't stop us. We're on an agenda from God.)
- Doctor Who: Adventures in Time and Space
OpenD6
Some of the free material under the OGL:
- Open D6 SRD
- The D6 System: The Customizable Roleplaying Game (PDF)
- D6 Adventure (PDF)
- D6 Space Opera (PDF)
- D6 Fantasy Rulebook (PDF)
The rest of the books published under the OGL can be found here
AntiPaladin Games have published the free Mini Six sytem that is a slimmed down version of the OpenD6.