By: Murushii
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You are a participant in Project Threshold, an experiment designed to force people to confront their deepest fears. Pass through sets of blue and red doors, survive what waits beyond them, and reach the end, if escape is even possible. Project Threshold is a psychological horror and memory-based walking simulator where players must confront the fears and horrors waiting beyond each threshold.
Linux · May 31, 2026
Worldwide · Exact date · Full release · IGDB
PC (Microsoft Windows) · May 31, 2026
Worldwide · Exact date · Full release · IGDB
Catalog sources
31 achievements available.

Open a door in the game's main menu.
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Click the logo on the game's main menu.
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Register to Project Threshold.
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Reach the end.
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You look at the cute doggo on the picture frame.
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You died for the first time inside the Threshold.
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Playing the game for the first time.
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Community notes