This is my new favorite! It's a combination of easily-usable-at-the-gaming-table adventure and gorgeous art object. I wish I had been fast enough to get it in print; I downloaded the pdf version long after the print copies had run out.
As you can see from the cover, it has the look of a Whitman Gold Key Comic from 1971. Fun drawings and useable but also fun maps continue throughout. Artist Jeff Call has really hit it out of the park. The art fits hand-in-glove with the tone of the adventure and the writing, by blogger and creative mastermind Trey Causey. The formatting is very good at pulling immediately-needed-by-the-GM-at-the-table elements into sidebars, but allowing the main text to describe things with a few more evocative words (but not too many - the reader never drowns in text, but always gets the flavor). Fun concepts such as Thedabara, a reminiscing undead celebrity whose name alludes to real-life silent film star Theda Bara, abound in the adventure. The adventure text is fun to read, even if you don't run it, but it's easily runnable for kids or adults. The humorous tone keeps things light, but there is always an element of internal logic and a serious enough core so that players won't find the humor excessive or too cheesy. The flavor is beyond the sum of its parts, and I'm sure Trey Causey had many additional and different inspirations, but I pick up notes in Mortzengersturm of: 1967 Rankin-Bass stop-motion kid's movie Mad Mad Monster Party, Alex Jordan's House on the Rock eccentric tourist attraction in Wisconsin, and Vincent Price and Peter Lorre in 1963's The Raven movie.
There is a humorously illustrated board game on two pages which points out features of the adventure graphically, but could also be played in lieu of D&D if you really wanted to. There are also a couple of "coming attractions" previews of other things in Trey Causey's game world. But these few things after the end of the adventure text don't distract or detract from what is an excellent product for running or just reading.
[5 of 5 Stars!]