d20 isn't so much a game system as a framework upon which other game systems are built. It was released by Wizards of the Coast under an "open source" type license known as the OGL - Open Gaming License (RTF). This essentially allows 3rd party companies to use the core rules as a foundation when building their own games or when publishing compatible materials for other d20/OGL games.
Numerous games have been built on the d20 framework, with WotC's own Dungeons and Dragons 3rd Edition (3.5) being the most popular. Other major d20 systems include d20 Modern and Star Wars d20.
d20 has also been used in rewrites of lots of older games including Call of Cthulu and the old AD&D Ravenloft campaign setting.
52 tags tagged:
- A Game of Thrones
- A Game of Thrones RPG 39
- Basic Fantasy RPG 17
- BESM d20 9
- Blackmoor 3
- Blue Rose 16
- Call of Cthulhu 682
- Call of Cthulhu d20 16
- Circvs Maximvs 3
- Conan d20 9
- D&D (mostly 3.5
- D&D Miniatures 23
- D&D: Dragonlance 24
- D&D: Kalomar
- d20
- d20 Golden Age 1
- d20 Modern 132
- d20 Steampunk
- DragonMech 2
- Dragonstar 4
- Dungeons & Dragons 1960
- Dungeons & Dragons 4th Edition 79
- En World
- Engel 10
- ENWorld 3
- Farscape RPG 1
- Iron Heroes 33
- Legend of the Five Rings 85
- M&M: Golden Age 1
- Monte Cook's Arcana Unearthed 20
- Monte Cook's World of Darkness 4
- Mutants & Masterminds 171
- Northern Crown 2
- Nyambe 3
- OGL Wild West 1
- Omni System 2
- Pathfinder RPG 1
- Scarred Lands 4
- Sidewinder Recoiled 1
- Silvervine Games 2
- Slayers d20 3
- Spycraft 46
- Spycraft 2.0 10
- Star Wars d20 71
- Star Wars Saga Edition 27
- Stargate SG-1 13
- Sword and Sorcery Studios
- Traveller d20 16
- Trinity 28
- True20 51
- Urban Arcana 6
- Uresia: Grave of Heaven 8
Tagged Gamers Visible on Map
Gamers with this tag
5 discussions tagged
-
D/FW Groups
2 posts, last 2008-07-01 at 14:40 -
Are there any intrepid souls out there?
4 posts, last 2008-04-20 at 01:43 -
Houston Tabletop Gaming Association
1 post, last 2008-02-22 at 03:46 -
Roleplaying mechanics
33 posts, last 2007-08-09 at 23:27 -
d20 tag page messed up
2 posts, last 2007-04-11 at 00:38