| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2011 | 978-0-9836133-1-2 | Authors of GnomeStew | Masks: 1,000 Memorable NPCs for Any Roleplaying Game (EGP42002) |
| 2012 | 978-0-9836133-2-9 | Phil Vecchione | Never Unprepared: The Complete Game Master's Guide to Session Prep (EGP42003) |
| 2015 | 978-0-9836133-3-6 | '' | Odyssey: The Complete Game Master's Guide to Campaign Management (EGP42004) |