Insomnis is a first-person horror game focused on story, exploration and solving puzzles to advance through a terrifying atmosphere. Players take control of Joe Castevet, who will have to deal with a mysterious inheritance. Discover all the secrets of the Castevet Mansion!


The old Castevet manor has just been uninhabited, many mysteries await you in the creepy walls of this old residence. Unravel the secrets of Insomnis and fight against your own destiny in a story full of intrigue and horror!


  • Atmospheric Horror: Insomnis generates scares and tense moments with the help of the environment and sounds.
  • In the Castevet mansion, rooms will change and your worst nightmares will come to life.
  • Analogue and digital puzzles: Combining different original mechanics, solve a variety of complex puzzles to advance in search of answers.
  • Exploration focused story: Immerse yourself in a morally ambiguous narrative, where nothing is as it seems. Dark secrets await you in your grandfather's abandoned manor.
  • Multiple endings: Make decisions with caution, your final choices will decide the fate of the characters.


Joe Castevet is the grandson of a famous English scientist named Roman Castevet.
When Roman dies, he bequeaths the manor where he lived to his grandson.
Once there Joe will begin to investigate each room in search of answers. As the hours pass, the old house becomes a darker place and he will discover that he is not alone in his grandfather's beloved home.
Countless of secrets and mysteries await him in the haunted Castevet mansion!

Available Achievements

The postman always rings twice
90 XP
My lovely toys
90 XP
The reader
90 XP
90 XP
30 XP

Insomnis Ratings & Reviews

  • 60%
    Critics Recommend
  • 70
    Top Critic Average
  • Fair
    OpenCritic Rating
  • See All Reviews
by William Worrall
6 / 10
While Insomnis has plenty of polish and some good atmosphere, that's not enough on its own. Nothing can save the game from its fate of being an utterly pedestrian first-person horror title.
Reviews provided by OpenCritic

Insomnis System Requirements



OS versionWindows 7
OS versionWindows 10
CPUIntel Core i3-2100 or equivalent / AMD® FX-6300
CPUIntel® Core™ i5-4460, 2.70GHz or AMD FX™-6300
Memory4 GB
Memory8 GB
GPUNVIDIA® GeForce GTX 750 Ti / ATI Radeon HD 7950
GPUNVIDIA® GeForce® GTX 1050 with 2GB VRAM
DirectXDirectX 11
DirectXDirectX 12
Storage4 GB
Storage8 GB
Additional input deviceGamepad
Languages Supported
  • Audio: English
  • Text: Catalan, Chinese (Simplified), Dutch, English, French, German, Italian, Japanese, Korean, Polish, Portuguese, Russian, Spanish (Spain), Ukrainian
Insomnis © 2023 Developed by Path Games published by Gammera Nest, S.L. All other trademarks, logos and copyrights are property of their respective owners. All rights reserved