
Species: Unknown is a 1 to 4 players co-op survival horror. Complete high-risk missions aboard an abandoned ship while being hunted by an unknown creature. Survive and upgrade your gear to face each new threat that lurks in the dark.
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About
Species: Unknown is a first-person survival horror game, playable in co-op with up to 4 players (private or public servers) or solo. You play as a mercenary sent aboard an abandoned spaceship. Your job? Execute high-risk contracts, make it out alive, and claim your reward. But keep in mind that you’re not alone. Something is hunting you…
Form a squad of up to 4 players to take on different contracts with escalating difficulty. Each mission plays differently depending on your objective, your teammates, the map and which of the 5 intelligent threats is stalking you. No one survives alone, but you can try.

Proximity Chat & Radio are available: distance matters, walls matter. Proximity Chat is bringing more tension, sometimes chaos, and unforgettable moments to your co-op sessions.

Every contract drops you into a different nightmare. Whether you're tasked with extracting a black box, capturing or eliminating an unknown threat, or even destroying the ship to prevent the creature from escaping… Each mission demands a specific strategy and none of them are easy.
The specimen is chosen procedurally from a growing roster of terrifying monsters. Each one comes with distinct behaviors, hunting patterns, strengths, and weaknesses. You’ll need to investigate your surroundings to gather vital clues and identify the threat in order to proceed smoothly (or not). Do your job and get rewarded, or die without anyone knowing.

Strategize as a group, make smart use of your tools that can turn the tide, if only for a moment:
Motion Tracker : Detect nearby movement and prepare for what's coming
Shield : Block deadly attacks and buy time for your team
Health Syringe : Heal yourself or allies in the heat of battle
Mini-Map : Navigate pitch-black corridors with real-time positional data
Guns won’t always save you. Some threats are too resistant or simply untouchable. But the right weapon, found at the right time, can help you push through or even take the creature down.

The higher the risk, the higher the reward. Completing contracts earns you credits you can use to:
Upgrade your gear
Buy new tools
Customize your appearance
Gather lore and build your own creature museum
Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Languages: English, French, Italian, German, Spanish - Spain, Simplified Chinese, Korean, Japanese, Polish, Portuguese - Brazil, Russian
Engagement
Hours played at review time, across 193 reviews with recorded playtime.
Reviews
Themes across 193 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
positive critical· bar length = how often the theme comes up
Reviews
Excellent mood, atmosphere, challenges, and monsters. As a long time fan of Phasmo, Ghost Watchers, Demonologist, etc... this game builds on those themes in creative new ways. Given this is in Early Access I'm hoping it doesn't get abandoned as a cash grab. The pro's of this game are many, and I enjoy playing this with my friends immensely. The two main con's to this game are there are only a few progression items and only a single map. At the price point it's at, I'm not unhappy at all, but I would be disappointed if no new maps, items (progression gear), or species get added. (Side note: as an indie game dev myself I was entertained to see the same UE marketplace assets being used for the hanger that I've used in a game as well).
とても面白くて無限に遊べます
Thought it was friendslop, turned out it was one of the best co op games you can play with friends
J'aime bien
The atmosphere,graphics,gameplay mechanics are cool yet still in early acces i hope there is more cool stuff to come...
this game is so realistic, i can in fact only run for 5 seconds until i'm cooked. 4/5
good
Early Access is Done Right! First of all, I have to say this game is incredibly well optimized. I haven't experienced any major FPS drops, random stutters, or performance issues. Considering it's still in Early Access, that's already a great sign for the future. The developers also deserve credit. They're very active, constantly communicating with the community, responding to reviews, suggestions, and feedback on Steam. A new map is coming soon, and if it introduces a fresh layout and different gameplay compared to HSS Hawking, I think it'll bring in even more players. Visuals & Atmosphere The visuals are absolutely incredible. The vortex jump sequence genuinely makes you feel like you're traveling through space, I can only imagine how immersive this game would be in VR. The evacuation sequence after destroy missions is one of my favorite parts. It gives me Outlast Trials vibes, where you're trying to escape while multiple ex-pops are hunting you. It's intense, cinematic, and creates some unforgettable moments. My only suggestion would be to shorten the timer slightly on the current map. Two minutes is usually more than enough, and it's common to reach the ship in around a minute while sprinting. It's fine in co-op, where teammates might slow things down, but it could be a bit tighter overall. The sound design is phenomenal. Every detail feels polished, and hearing Specimens crawling through the vents above you is genuinely best part. It constantly keeps you on edge and makes you think twice before moving. Gameplay Core mechanics like running, crouching, shooting, interacting, and healing all feel smooth and satisfying. The only thing I'd consider adjusting is stamina. Right now it drains a little too quickly, especially for solo players. If you're being chased without teammates to help, running out of stamina can become more frustrating than challenging. Speaking of solo play, I think many people exaggerate how difficult it is. It really isn't impossible. Missions like recovering the Black Box or destroying Hawking are completely manageable alone. Hunting Specimens is definitely harder, but with good positioning and the same strategies you'd use in co-op, it's entirely doable. It simply requires more patience. Suggestions One improvement I'd love to see is more procedural variety. After reaching the Command Deck, the remaining areas such as the Lab, Crew Quarters, and Engine section could have randomized corridors, locked doors, and room layouts. Keeping the main structure while randomizing the interior would greatly increase replayability and prevent players from memorizing every route. The Specimen AI also has room to grow. I'd love to see them become smarter by remembering where they've seen players, predicting escape routes, searching more intelligently, and relying less on predictable patrol paths. More stealthy and adaptive behavior would make encounters significantly more terrifying. Finally, I'd really like to see a wider variety of contracts. Some ideas include: Fighting off rival scavengers or pirates boarding the station. Power failure missions where you must restore electricity and stabilize the ship before a catastrophic explosion. Rescue operations where you search for survivors and escort them safely back to your ship. More contract types would naturally add more replayability and give players even more reasons to keep coming back. Final Thoughts This honestly feels like the co-op Alien Isolation game many people have wanted for years. It's already an amazing experience despite being in Early Access, and with continued updates and improvements, I can easily see it becoming one of the best co-op horror games available. I'm excited to see where the developers take it next.
nice game play
This game is great: well optimized, challenging gameplay, very fun with friends, and lots of customization.
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Trends
Modeled estimate over time, reconstructed from Steam's monthly review histogram.
Engagement
DAU/MAU are modeled from peak concurrent players (≈×8 and ×28) — Steam publishes no active-user counts, so treat these as rough estimates, not reported figures.
Audience
Estimated from the language of this game's reviews — a proxy for where players are, not official Steam demographics.
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