The Most Terrifying Human Experiment Ever

In the shadow of Cold War paranoia, a secret Soviet experiment aims to push the limits of human endurance by keeping test subjects awake for an extended period using a mysterious gas. As the days stretch on, the experiment spirals beyond scientific control, revealing unsettling truths about the human mind, the nature of sleep, and the darkness that lies within us all. This is The Russian Sleep Experiment, a creepypasta story that gained traction and still unnerves us over a decade later. You can find Edwin social media as @edwincov Have an idea you want to send? Send me an email or DM! edwin@scarystory.com You can get these ad-free through ScaryPlus.com free for 14 days, then 4.99 per month. Cancel anytime. Get in touch on HorrorStory.com

You can listen to The Most Terrifying Human Experiment Ever online on Radio and Podcast. Open the player on this page to stream the available audio.

The Most Terrifying Human Experiment Ever is an episode from A Dark Memory: Legends, Haunted Places, and Supernatural Mysteries by Horror Stories.

This episode is 27:36 long.

This episode was published on Jul 19, 2025.

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