| title | media type | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|---|
| Digital Web 2.0 *OP | Paperback | 978-1-56504-426-5 | 1998 | Roger Gaudreau · Jen Cloduis · Jaymi Wiley |
| GURPS Black Ops | " | 978-1-55634-333-9 | 1997 | Jeff Koke |
| Gurps Grimoire: Tech Magic, Gate Magic and Hundreds of Spells for all Colleges | " | 978-1-55634-243-1 | 1994 | Daniel U. Thibault |
| GURPS Magic | " | 978-1-55634-811-2 | 2016 | Steve Jackson · Daniel U. Thibault · Michael Suileabhain-Wilson |
| GURPS Magic | Hardcover | 978-1-55634-733-7 | 2005 | Steve Jackson · Daniel U. Thibault |
| GURPS Russia | Paperback | 978-1-55634-258-5 | 2002 | |
| GURPS Warehouse 23 | " | 978-1-55634-328-5 | 1997 | S. Ross |
| In Nomine Angelic PG | " | 978-1-55634-340-7 | 1997 | James Cambais · Sam Chupp · David Edelstein · James Cambias · Steve Kenson · Mike Nystul · Derek Pearcy |
| In Nomine Heaven and Hell | " | 978-1-55634-339-1 | 1997 | James Cimbais · James Cambias · David Edelstein · Matthew Grau · Kenneth Hite · Steve Kenson · John Tynes |
| In Nomine Superiors 1: War & Honor | " | 978-1-55634-409-1 | 1999 | R. Sean Borgstrom · James Cambias · Genevieve R. Cogman · David Edelstein · Elizabeth McCoy · Derek Pearcy |
| Revelations I: Night Music | " | 978-1-55634-289-9 | 1996 | Sam Chupp · Derek Pearcy · John Tynes |
| The Marches: Revelations 2 | " | 978-1-55634-331-5 | 1997 | Sam Chupp · David Edelstein · Steve Kenson · John Tynes |
| Uresia: Grave Of Heaven | " | 978-1-894525-33-6 | 2002 | |
| Uresia, Grave Of Heaven: BESM D20 Supplement | " | 978-1-894938-18-1 | 2004 | |
J R · J. Ross · John R. · John Ross · S.J. · s. j. ross · S. John · S R · S. Ross · Steven John Ross
Guardians of Order · Steve Jackson Games · White Wolf Publishing