G.O. ยท Georg Opitz
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Dungeon Crawl Classics #32: The Golden Palace of Zahadran | 978-0-9776418-6-4 (0-9776418-6-4) | 2006 |
| Dungeon Crawl Classics 43: Curse of the Barrens | 978-0-9786370-9-5 (0-9786370-9-7) | 2007 |
| PC Pearls: A Collection of Character Inspiration: 2 | 978-0-9816663-5-8 (0-9816663-5-3) | 2008 |