Sons (and Daughters) of D20!

[jaerdaph]

Monte Cook's World of Darkness
Forbidden Kingdoms (OWC)
Gaslight Victorian Fantasy (relatively new from Battlefield Press)

 

[GameDaddy]

Twin Crowns
True 20
Crime Scene d20 (Hogshead Publishing)
Oathbound (Bastion Press)
Midnight
Snarfquest
Dragonstar
Etherscope
OGL Ancients
Codex Arcanis
Iron Kingdom
Legends of Excalibur
Sovereign Stone
Munchkin (SJG Games)
Everquest
Dragonmech

 

[Votan]

Does Trailblazer count?

 

[Qwillion]

Heroes of the Jade Oath

 

[Dimitri Mazieres]

Oathbound (Bastion Press)
Midnight
Dragonstar
Codex Arcanis
Iron Kingdom
Sovereign Stone

I think these are just d20 settings, not derivative systems on their own (although they may present new rules).

 

[Voadam]

Deeds Not Words
Silver Age Sentinels d20
A Game of Thrones d20
World of Warcraft RPG

 

[Voadam]

Is Dragonstar a supplement or an almost stand alone game?

My understanding is Dragonstar is a setting without core rules, it has modified classes and such but no description of how to run combat or such. Settings are supplements, not games in and of themselves.

 

[pawsplay]

Everquest II
Aberrant d20
Adventure! d20
Godlike (OGL appendix)
Link West

 

[jaerdaph]

Prime Directive d20
Prime Directive d20 Modern

Both from Armadillo Design Bureau

 

[Nellisir]

Black Company RPG