| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) | |
|---|---|---|---|---|
| A Mercenary's Tale | 978-1-903402-59-7 (1-903402-59-X) | 2001 | Mike Ridley | |
| Das Warheads-Oratorium, 1 Audio-CD | 978-3-934847-12-5 (3-934847-12-9) | 2001 | Romuald Karmkar · Michael Farin · Manfred Zapatka · Günter Aschenbrenner | |
| Have Gun Will Travel | 978-1-904034-50-6 (1-904034-50-0) | 2003 | ||