| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| GURPS Low-Tech | 978-1-55634-802-0 (1-55634-802-9) | 2010 | William H. Stoddard · Peter Dell'Orto · Dan Howard · Matt Riggsby |
| GURPS Magic 4E Softcover | 978-1-55634-795-5 (1-55634-795-2) | 2009 | Andrew Hackard · Jeff Rose |