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Project Unknown
An online co-op horror game featuring unique playable characters and RPG mechanics. Exorcise ghosts using your special abilities and tools while surviving the supernatural onslaught
What players say
Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-02 · quoted reviews as of 2026-05-13.
“Unexpectedly great game. I have bought a bunch of these style of games and they are good for a laugh or two but this one I have played for hours at a time now. The endless mode is my favorite as it becomes more and more chaotic the higher your team progresses. Devs seem pretty…”
— a player, Steam review · 68 hrs played“If you have played Phasmophobia or Demonologist, take the scare factor, multiply it by 10, then add in an ever present spook factor like something is falling you or watching you, and you have this game! By far the most unique twist on paranormal investigation games. Each…”
— a player, Steam review · 7 hrs played“This is a fun game, but it is a major bummer that the developers seem to have abandoned it after Halloween. The jumpscares are abrupt and can be really spooky. I recommend it for a few hours of fun, but the replayability is pretty limited with several months of no updates.”
— a player, Steam review · 5 hrs playedPlayer activity
Monthly average concurrent players. Live data self-collected from the Steam API · history through 2026-07 via SteamCharts.
Achievement stats
Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-26.
Price tracking
US-region pricing (USD), sampled twice daily by our own tracker since 2026-08-12. Steam prices vary by region — always confirm your local price on Steam.
Regional prices at last sample, in local currency — Steam sets each region's price independently.
Cheapest → most expensive, converted to USD at ECB reference rates (2026-09-25). Relative comparison only.
Latest official news
Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.
Regular Update v1.1.3 [8035]
Changes - Made teleportation prioritize rooms without ghosts - Added footstep sounds to The Patient and The Fool Fixes - Fixed issue for audio loss - Fixed issue with duplicate Zays - Fixed a bug wher
Regular Update v1.1.2 [8020]
Changes - Major change to The Fool special behavior - The Fool will not start a haunt if there are no players within the house - Major refactor for the revive dolls to increase their reliability - Por
Hotfix v1.1.1 [7987]
Fixes Fixed bug with lantern getting stuck in the vending machine Fixed bug with night vision drink not working after revive
Content Update v1.1.0
Changes NEW GHOST : The Fool. Information about them in the Ghost Station is pending analysis, all of the exorcist community must fight against him for it to reach 100%! Noctua. A potent energy drink
Games like Project Unknown
From our knowledge graph — ranked by shared traits, not a black box. Each card says why it's here.
Phasmophobia
95.1% · 432,646 reviews
shares Supernatural, Demons, Thriller, Detective
Demonologist
83.6% · 13,210 reviews
shares Demons, Thriller, Detective, Investigation
Ghost Exorcism INC.
73.8% · 3,480 reviews
shares Supernatural, Demons, Thriller, Detective
The Other Side
92.5% · 755 reviews
shares Demons, Detective, Online Co Op, Co Op
Ghost Janitors
86.2% · 588 reviews
shares Supernatural, Demons, Investigation, Online Co Op
Conrad Stevenson's Paranormal P.I.
93.4% · 808 reviews
shares Supernatural, Demons, Thriller, Detective
Pacify
86.5% · 14,588 reviews
shares Supernatural, Demons, Thriller, Online Co Op
Occult
71.5% · 561 reviews
shares Online Co Op, Survival Horror, Co Op, Dark
Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-05-13.
| Genres | Action, Adventure, Indie |
| Player tags | Early Access · Horror · Online Co-Op · Multiplayer · Psychological Horror · Co-op · Survival Horror · Dark · First-Person · Investigation · Supernatural · Mystery (SteamSpy community voting) |
| Features | Single-player · Multi-player · Co-op · Online Co-op · Family Sharing |
| Languages | English * , French * , Italian * , German * , Spanish - Spain * , Japanese * , Korean * , Polish * , Portuguese - Portugal * , Russian * , Simplified Chinese * , Ukrainian * , Finnish * , Traditional Chinese * , Slovak *… |
| Achievements | 30 |
Minimum system requirements (PC)
Minimum: OS *: WINDOWS® 7, 8, 8.1, 10 (64-BIT Required) Processor: Intel® Core™ i5-3470 or AMD Ryzen™ 3 1200 Memory: 8 GB RAM Graphics: NVIDIA® GeForce® GTX 760 2GB / AMD Radeon R9 280 3GB DirectX: Version 11 Storage: 9 GB available space