The story
Founded by Mark J. Hadley.1
Private company
2012 video game
Slender: The Eight Pages, originally titled Slender, is a survival horror game based on the Slender Man, a well-known creepypasta character. Influenced by the web series Marble Hornets, it was developed by independent developer Mark J. Hadley using the Unity game engine and was released in June 2012 by his one-man studio, Parsec Productions.2 Wikipedia text CC BY-SA 4.0
Last updated Oct 21, 2026.
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Slender: The Eight Pages, originally titled Slender, is a survival horror game based on the Slender Man, a well-known creepypasta character. Influenced by the web series Marble Hornets, it was developed by independent developer Mark J. Hadley using the Unity game engine and was released in June 2012 by his one-man studio, Parsec Productions.2
Founded by Mark J. Hadley.1
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