Project Threshold

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.

Developer: Murushii Studios.

Tags: Solo, Adventure, Walking Simulator, 3D.

Steam reviews: Mostly Positive (71% of 92).

Price: $1.94 (was $2.99, 35% off).

Released 2026-06-25.

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