The Floating Dungeon of Varrak Aslur (2018)

From the introduction:

You and your friends are about to embark on a dangerous yet rewarding adventure into the floating dungeons of Varrak Aslur, a powerful but long-dead wizard from Allansia, from the northern part of the Trolltooth Pass where it meets the Windward Plains. The magical dungeons of the wizard have risen from the ground and toppled the abandoned castle that it used to be part of. Right now it is drifting through the air towards Chalice, and the undead denizens of the dungeon are falling from the rapidly collapsing hunk of earth and corridors and terrorising decent folk.

How has the dungeon risen? What power keeps it aloft, and what damage will it do to the lands? The Heroes have been commissioned to get into the floating prison and find out why this is happening, and to try and find a way to stop it before it reaches Chalice and the evil dead are deposited upon it!

This adventure is designed to suit any number of players of any type, as the numbers of opponents can be adjusted to take into account the number of players taking part.