Compare S.I.N. Unit: Ghost Investigation & Removal prices across trusted key stores and find the best deal. Developed by Black Stairs. Published by Black Stairs. Released on 9/7/2021. Available on PC, Mac, Linux. Genres: Casual, Indie.

A ghost-hunting co-op that wants to be your next Phasmophobia night, but arrives with a mixed community reception and rough edges that only the most patient paranormal crews will forgive.

I went into S.I.N. Unit: Ghost Investigation and Removal with genuine goodwill. Solo-developer paranormal co-ops occupy a specific, cozy-creepy corner of the indie space I find hard to resist, and the premise here has real texture: you and up to three friends form a field unit, gear up from an Operations Center, and then walk into a haunted location trying to deduce what kind of entity is terrorizing the place before it kills you. That loop, on paper, is exactly the kind of slow-burn collaborative horror I want to spend an evening with. The mechanics have more going on than the sparse store description suggests. Each of the nine entity types carries a distinct hunt effect that reshapes how a session plays out. A Phantom hunts purely through sound with no visible form, a Shade locks every door in the building, a Djinn slows your movement to a crawl, and a Demon reverses your controls mid-chase. Because evidence clues are randomized rather than locked to a specific entity type, you cannot simply memorize which clues match which ghost and coast through a run. You scan with EMF readers, check temperatures with a thermometer, sweep for fingerprints under a UV flashlight, note doll possession and other environmental signals, and eventually try to capture the entity with the Dybbuk Box. There is also a benevolent spirit woven into each mission: listen for her humming and stay close to drain your terror meter, because if the hostile entity hunts you long enough, your vision desaturates, your heartbeat fills the soundscape, and you die. That terror-as-color-drain mechanic is genuinely atmospheric when it works. Where the game struggles is harder to overlook. The Steam community sits at a split rating, with roughly half of reviewers finding the experience worthwhile and the other half walking away frustrated. The player pool is small, which means online co-op lobbies can be near-empty depending on when you log in, and the solo experience, while technically supported, lacks the conversational tension that makes paranormal investigation games feel alive. The production values are functional rather than polished. There is obvious ambition in the entity roster and the idea of a benevolent helper ghost as a mechanical comfort, but the world around those ideas feels under-resourced. Rough geometry, sparse audio design outside the horror moments, and a general sense that the game shipped before all its seams were sealed are recurring themes in community feedback. For the right group, though, there is something here. The entity variety keeps early runs from feeling identical, the terror system creates genuine pressure moments, and the Dybbuk Box capture mechanic gives each mission a satisfying conclusion that Phasmophobia-style games sometimes skip in favor of pure survival. If you have two or three friends who enjoy piecing together paranormal evidence and can tolerate uneven execution, S.I.N. Unit has a quiet, slightly uncanny atmosphere that earns occasional appreciation. Go in alone expecting a polished horror experience and the cracks will show fast. Go in with friends who treat rough indie edges as part of the charm, and some runs will genuinely unsettle you. Kai, Scout Team

S.I.N. Unit: Ghost Investigation & Removal

S.I.N. Unit: Ghost Investigation & Removal

Sep 7, 2021Black Stairs
GamerScout Says

A ghost-hunting co-op that wants to be your next Phasmophobia night, but arrives with a mixed community reception and rough edges that only the most patient paranormal crews will forgive.

PCMacLinux
Best Price Available
€0.00
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Historical low: €34.95

GamerScout Verdict

Best suited for forgiving friend groups who want a rougher Phasmophobia alternative with a broader entity roster and a twist of ghost-ally design.

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Price History

Historical low
€34.955 Jun 2026
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€32.15€34.02€35.88€37.755 Jun16 Jun27 Jun7 Jul18 Jul
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Screenshots & Media

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About S.I.N. Unit: Ghost Investigation & Removal

I went into S.I.N. Unit: Ghost Investigation and Removal with genuine goodwill. Solo-developer paranormal co-ops occupy a specific, cozy-creepy corner of the indie space I find hard to resist, and the premise here has real texture: you and up to three friends form a field unit, gear up from an Operations Center, and then walk into a haunted location trying to deduce what kind of entity is terrorizing the place before it kills you. That loop, on paper, is exactly the kind of slow-burn collaborative horror I want to spend an evening with. The mechanics have more going on than the sparse store description suggests. Each of the nine entity types carries a distinct hunt effect that reshapes how a session plays out. A Phantom hunts purely through sound with no visible form, a Shade locks every door in the building, a Djinn slows your movement to a crawl, and a Demon reverses your controls mid-chase. Because evidence clues are randomized rather than locked to a specific entity type, you cannot simply memorize which clues match which ghost and coast through a run. You scan with EMF readers, check temperatures with a thermometer, sweep for fingerprints under a UV flashlight, note doll possession and other environmental signals, and eventually try to capture the entity with the Dybbuk Box. There is also a benevolent spirit woven into each mission: listen for her humming and stay close to drain your terror meter, because if the hostile entity hunts you long enough, your vision desaturates, your heartbeat fills the soundscape, and you die. That terror-as-color-drain mechanic is genuinely atmospheric when it works. Where the game struggles is harder to overlook. The Steam community sits at a split rating, with roughly half of reviewers finding the experience worthwhile and the other half walking away frustrated. The player pool is small, which means online co-op lobbies can be near-empty depending on when you log in, and the solo experience, while technically supported, lacks the conversational tension that makes paranormal investigation games feel alive. The production values are functional rather than polished. There is obvious ambition in the entity roster and the idea of a benevolent helper ghost as a mechanical comfort, but the world around those ideas feels under-resourced. Rough geometry, sparse audio design outside the horror moments, and a general sense that the game shipped before all its seams were sealed are recurring themes in community feedback. For the right group, though, there is something here. The entity variety keeps early runs from feeling identical, the terror system creates genuine pressure moments, and the Dybbuk Box capture mechanic gives each mission a satisfying conclusion that Phasmophobia-style games sometimes skip in favor of pure survival. If you have two or three friends who enjoy piecing together paranormal evidence and can tolerate uneven execution, S.I.N. Unit has a quiet, slightly uncanny atmosphere that earns occasional appreciation. Go in alone expecting a polished horror experience and the cracks will show fast. Go in with friends who treat rough indie edges as part of the charm, and some runs will genuinely unsettle you.

Kai
Kai · Scout Team

Indie & narrative

Tags

singleplayermultiplayercooponline-coopachievementscontroller-supportcloud-savestier:aaaParanormal InvestigationGhost CaptureTerror MeterEntity VarietyEvidence DeductionBenevolent Spirit MechanicSmall-Team Co-opAtmospheric Horror

System Requirements

Minimum

OS
Windows 7, 8.1, 10
Memory
8 GB RAM
Storage
8 GB available space
Graphics
1GB Video RAM
Processor
2Cores 2GHz 64-bit CPU

Recommended

OS
Windows 7, 8.1, 10
Memory
8 GB RAM
Storage
8 GB available space
Graphics
2GB Video RAM
Processor
4Cores 3GHz 64-bit CPU

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Game Info

Developer
Black Stairs
Publisher
Black Stairs
Release Date
Sep 7, 2021

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What platforms is S.I.N. Unit: Ghost Investigation & Removal available on?

S.I.N. Unit: Ghost Investigation & Removal is available on PC, Mac, Linux.

When was S.I.N. Unit: Ghost Investigation & Removal released?

S.I.N. Unit: Ghost Investigation & Removal was released on 7 September 2021.

Who developed S.I.N. Unit: Ghost Investigation & Removal?

S.I.N. Unit: Ghost Investigation & Removal was developed by Black Stairs.