| Reference | Title | Edition | Serie |
| GHS1001 | A Green Place to Die | D20 System | Not set |
| GHS1006 | A Mage's Tale | D20 System | Not set |
| GHS1002 | A Thief's Tale | D20 System | Not set |
| GHS1005 | Dark and Stormy Night | D20 System | Not set |
| GHS1010 | Gatekeeper's Adventure Bundle | D20 System | Not set |
| GHS1003 | Red or White | D20 System | Not set |
| GHS1004 | The Plague of Nyrathoth | D20 System | Not set |
| GHS1000 | The Succubus Bride | D20 System | Not set |