A One-Round Living Greyhawk Grand Duchy of Geoff Regional Interactive Adventure
From the introduction:
They say that in the Fires of Brewfest a person may see signs of the past - or even ways to change the future. The gnomes call upon adventurers to play a most unusual role.
A Grand Duchy of Geoff regional interactive adventure for APLs 2 - 16.
This adventure is published in several documents:
- GEO5-MM Reverse Dungeon (43-page PDF scenario)
- Elven Characters (12-page PDF character sheets)
- Hobgoblin Characters (12-page PDF character sheets)
Also, the adventure requires access to certain rules from Frostburn.