Mannequin Syndrome

Mannequin Syndrome is a third-person action game with horror elements, playable solo or in 1–4 player online co-op. Enter the Syntrax Facility, complete dangerous objectives, restore critical systems, initiate the shutdown, and escape as the mannequin threat grows increasingly aggressive.

At a glance

• Platform: Windows.
• Genres: Action, Adventure, Indie, Free To Play, Early Access.
• Release date: May 5, 2026.
• Steam user reviews: Mixed (43% positive).
• Delivered as a Steam library entitlement — activation is handled by Steam.

Minimum

Recommended

System requirements as published by the developer on Steam.

Activate on Steam

• Open the offer above — it takes you to this game's official Steam store page.
• Buy it there, or if you bought a key elsewhere, open Steam and choose Games → Activate a Product on Steam.
• Enter the product code exactly as it was issued to you.
• The game appears in your Steam library — download and play.

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