What began as a teenage experiment with religious horror has turned into one of the biggest analog horror franchises on YouTube. Alex Kister started working on ideas for what would become The Mandela Catalogue while he was still a high school student in Hubertus, Wisconsin. His early concepts mixed biblical stories with demonic forces, imagining a world where familiar religious events had been twisted by something evil.
That initial spark found its first real outlet through a Reddit analog horror contest. Kister created a short piece called Overthrone, built from an unsettling edit of the children’s cartoon The Beginner’s Bible: The Nativity. The pandemic lockdown gave him the time and mental space to push the idea further. Working from his childhood home with basic editing tools and no budget, he turned that early experiment into a full series and launched it on YouTube in June 2021.
What Makes the Series So Creepy
Set in the fictional Mandela County, Wisconsin, the series plays out like a collection of public service announcements and lost broadcast tapes from the 1990s. The core threat comes from beings called Alternates, shape-shifting creatures that can copy any human’s appearance with perfect accuracy. These entities cannot physically harm people. Instead, they use psychological warfare, saying things that drive victims to hurt themselves or obey their commands.
Kister explained that the fear at the heart of the series comes from something universal.
“When I was young, I felt like the thing that would scare me the most was not a typical, bogeyman-style monster. But just coming home, coming to your room, and seeing yourself there instead.”
That idea hit harder than usual because Kister created the project during quarantine. He said isolation affected him deeply and he wanted to focus on losing that sense of safety and security.
How the Internet Found It
The series did not become famous overnight. Early videos like Overthrone and The THINK Principle built a slow following through the summer of 2021. The most popular early installment, Vol. 1, pulled in over 1.6 million views within months of its release that August.
Then October 2021 changed everything. YouTubers started making analysis videos. One breakdown by a creator called Wowman gained over 221,000 views in a month. A deeper dive by Wendigoon pulled in more than 1.7 million views in the same stretch. Fans responded by making fan art and memes on Twitter and other platforms, pushing the series into a wider online conversation.
Today, the series has gathered well over 100 million views across its official episodes, placing it among the largest original analog horror franchises on the platform, right alongside titles like Local 58 and The Backrooms.
Hollywood Comes Calling
The success did not stay online. In July 2026, after a competitive bidding war involving 11 studios, United Artists, Steven Spielberg’s Amblin, and Amazon MGM Studios won the rights to adapt The Mandela Catalogue into a feature film. Alex Kister is directing the movie and wrote the screenplay with Tyler Clifton.
The producers include Steven Spielberg, Scott Stuber, Holly Bario, Aaron B. Koontz, and Nick Nesbitt. Kister and Clifton are also producing. The film is scheduled for a summer 2028 release, with the date set for June 9, 2028.
Fan Reactions Are Mixed but Passionate
Not every fan is thrilled about the Hollywood treatment. Some worry that a big-studio version will lose what made the YouTube series feel so personal and raw. One Tumblr user wrote that they felt proud of Kister but were not excited about a Hollywood adaptation. Another commenter on Deadline’s announcement was more blunt, saying studios will “swamp us with mediocre versions of YouTube hits”. Yet many others are excited to see the series reach a larger audience.
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The Series Continues
For those who want to catch up before the movie arrives, the full series is available to stream on Alex Kister’s YouTube channel for free. The complete playlist, including Vol. 4, which premiered on November 25, 2022, and other installments, can be watched worldwide without any subscription or regional restrictions. New viewers can start from the beginning to follow the story of Mandela County and its terrifying Alternates.
Also Read: From YouTube to Hollywood: How 6 Digital Creators Made Their First Horror Movies
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