From publisher blurb:
For this Savage Realm of Suzerain enjoy an old school, killer dungeon in a fantasy setting that draws heroes from every corner of time and space!
The Lich Queen awaits in her Palace. Your heroes have survived Tomb of the Lich Queen, pushed through Machine of the Lich Queen, and now must face the apocalyptic climax of the Dungeonworlds trilogy! Reality itself twists and roils all around. Prove yourself to the universe, take the final steps!
Become a god...or a corpse!
Inside you'll find all you need to run this unique setting, all the background information and encounters needed to challenge a party of 18th- 20th level characters including the stats for a wide array of new creatures and traps!