You wake up in your cell on the same night that The Witcher was executed in the electric chair. Before saying goodbye, he said that he would take everyone with him, except for whoever had this... bone? Will he have kept his promise? Will you be able to escape the horrors that have been unleashed after his death?
Sphenoid is a horror escape room game that takes place in a prison. Solve puzzles, find clues and find out what happened to the rest of the prisoners.
The game is set in a dark and atmospheric environment. The prison is full of shadows and secrets, and you'll never know what's lurking around the corner.
The puzzles have been designed by escape room game creators.
Explore the different areas of the prison and face its horrors.
Find out what happened to the rest of the prisoners.
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Sphenoid costs Free.
Minimum: Minimum: OS: Windows 10 Processor: Intel Core I5-8400 / AMD Ryzen 3 3300X Memory: 12 MB RAM Graphics: GTX 970 / AMD Radeon RX 580 DirectX: Version 11 Storage: 5 MB available space Recommended: Recommended: OS: Windows 10 Processor: Intel Core I7-8700K / AMD Ryzen 5 3600X Memory: 16 MB RAM Graphics: GTX 1070 / RX 5600-XT DirectX: Version 11 Storage: 5 MB available space
Sphenoid is available on Windows PC.
Review data is not yet available for Sphenoid.
Sphenoid was released on Sep 17, 2025.
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