| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Gangbusters 1920's Role-Playing Adventure Game | 978-0-88038-975-4 | 1990 | |
| GURPS Horror | 978-1-55634-453-4 | 2002 | Kenneth Hite · J. M. Caparula |
| Otherlands | 978-0-88038-829-0 | 1990 | Scott Bennie · John Terra |
| The Republic of Darokin | 978-0-88038-713-2 | 1989 | |
S H · Scott D. Haring · Scott Harrington · Scott Herring · Scott Horenstein · Scott Hornstein · Seth Heringer