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The Aldebaran Sect


Experience the thrill of mythos investigation with "The Lost Photos of the Aldebaran Sect," a player-driven game that lets you shape the course of the hunt for the missing building and what happened to its occupants. With an exciting scavenger hunt theme and six pre-generated characters to choose from, this game is perfect for players of all backgrounds and skill levels. But that's not all - the game also comes with high-quality player handouts and full-color artwork to bring the mystery to life. Plus, with PDF bookmarks and other convenient features, you'll be able to easily narrate and dive into the game with ease. Don't miss out on this one-of-a-kind experience!

With tensions rising and danger lurking around every corner, "The Aldebaran Sect" is a thrilling tale of investigation and survival.

The Investigation

For fifty years, the Detroit Historical Society has been haunted by the mysterious disappearance of the Aldebaran building. When a chance to finally uncover the truth arises, they jump at the opportunity. But as they follow the clues on a deadly scavenger hunt across the city, they soon realize that the case is far more complex and dangerous than they ever could have imagined. Cryptic notes pique their imaginations and otherworldly beings stalk their every move, leading them down a twisted path of horror and mystery. Navigating the city's dark corners and unexpected angles, the investigators must race against time to solve the case before it's too late.

About the Author

Matthew Tansek is a horror and supernatural fiction author with a passion for exploring the mysterious and unknown. With two decades of experience as a tabletop gaming scenario designer, he has developed the skills necessary to create evocative and compelling gaming experiences suitable for all levels of players. His latest work, his second installment in the Miskatonic Repository, showcases his depth and versatility in the medium. To learn more about Matthew's writing and other creative projects, visit his website at

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February 8th, 2023
A phenomanal Call of Cthulhu adventure! There aren't enough set in my hometown of Detroit, which was great to see, though I'm sure you could change things to fit into your own personal campaign setting. I really appreciated just how open the [...]
February 8th, 2023
I'm hard pressed to think of another game package with the level of detail and quality that this one possesses. There is an uncommon level of world building present in this game that is both simple to comprehend yet detailed to the point that even [...]
February 7th, 2023
Played this module with 4 others. Had a great time learning about the mysterious disappearances in the story with great pre-gen character sheets. Lots of variety in play depending on who is running it and which character you choose to play as. If you [...]
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Scanned image
These products were created by scanning an original printed edition. Most older books are in scanned image format because original digital layout files never existed or were no longer available from the publisher.

For PDF download editions, each page has been run through Optical Character Recognition (OCR) software to attempt to decipher the printed text. The result of this OCR process is placed invisibly behind the picture of each scanned page, to allow for text searching. However, any text in a given book set on a graphical background or in handwritten fonts would most likely not be picked up by the OCR software, and is therefore not searchable. Also, a few larger books may be resampled to fit into the system, and may not have this searchable text background.

For printed books, we have performed high-resolution scans of an original hardcopy of the book. We essentially digitally re-master the book. Unfortunately, the resulting quality of these books is not as high. It's the problem of making a copy of a copy. The text is fine for reading, but illustration work starts to run dark, pixellating and/or losing shades of grey. Moiré patterns may develop in photos. We mark clearly which print titles come from scanned image books so that you can make an informed purchase decision about the quality of what you will receive.
Original electronic format
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File Last Updated:
January 30, 2023
This title was added to our catalog on January 29, 2023.