The Hanging Coffins of the Vampire Queen is one of the most entertaining adventures I've read in a while. It's an upper level osr adventure (10-14) that has an amazing sense of style and humor. The party is captured by the aforementioned vampire queen and must fight their way to freedom for her enjoyment. I have to say the introductory scene with the queen is one of my favorite npc intros ever. The adventure contains many memorable encounters and a great sense of humor.
The adventure was written for OSRIC, but I believe I'm going to run it with 5th edition D&D. I'm actually thinking about converting it and using it as a Halloween one shot.
If you want to see what other bloggers thought of it check out Venger's old school gaming blog or The Other Side blog..
You can pick up your copy here.Check out the second Maximum Mayhem Dungeon kickstarter here.
I want to add a short disclaimer. +Mark Taormino was cool enough to give me a copy of the pdf to check out before purchasing my print copy (which is an add-on to his new kickstarter).