GreyWake: Project Somnium
Demo available
About the game
GREYWAKE: Project Somnium is a first-person, puzzle-focused horror game where exploration leads you deeper into the terrifying secrets of GreyWake Island. Solve challenging puzzles, investigate abandoned military facilities, and uncover the truth behind a classified experiment.
Original Steam description
GreyWake: Project Somnium is a first-person puzzle-horror game set on a remote island abandoned in the aftermath of World War II. Explore forgotten military facilities, abandoned hospitals, and hidden research areas as you uncover the secrets behind a disastrous military operation.
Solve environmental puzzles, investigate mysterious documents, and piece together clues scattered across the island to discover what really happened. With puzzles at the heart of the experience, the game blends atmospheric horror, environmental storytelling, and a dark mystery that slowly unfolds as you explore.
Search the abandoned facilities, uncover the truth behind a classified experiment, and discover the secrets that were never meant to be found.
GreyWake Island
Walk through abandoned military compounds, decaying hospital rooms, and hidden research areas frozen in the aftermath of a forgotten tragedy. Every room holds traces of the people who once lived and worked here. Look closely. Even the smallest detail may reveal something important.
Investigate your surroundings, connect clues, and solve intricate environmental puzzles to unlock new areas and uncover hidden information. Examine objects, interpret recordings, and use what you discover to make sense of a place that no longer follows the rules it once did.
The answers are rarely handed to you. Observation and curiosity are your most valuable tools.






Demo and release information
A Steam demo was found at the latest check. Confirm it is still available in your region on Steam before downloading.
Steam demo, playtest and Early Access: what is the difference?
Information & artwork: Steam · Last checked UTC