Steam app 2747330 · updated 12 Sep 2026, 18:18 UTC
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.
718 hourly samples, with the daily peak drawn over them. Weekends are shaded.
12 months, October 2025 to September 2026. The highest number of people in the game at once, each month, on a time axis -- a gap in the record stays a gap.
The highest number of people in the game at once, each month. Four, because four is as far back as the source keeps anything finer than one figure a month.
31 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.
31 days as the curve, each the highest figure that day. Behind it, 437 hourly samples from 13 Aug, which is as far back as the source keeps every hour. Weekends are shaded.
12 days as the curve, each the highest figure that day. Behind it, 281 hourly samples. Each dip is a night. Weekends are shaded.
Species: Unknown was released on 23 Oct, 2025.
This game is set in a dystopian future in space involving alien creatures, zombies, and other mutant monsters. It contains violence, gore, horror and is not recommended for players under 18.
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| English | |
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A blank audio cell means full audio was not marked in the returned language list.
Early Access Trailer
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New Specimen Announcement
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Release date & Demo Trailer
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Closed Beta Announcement Trailer
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Annoucement Trailer
Watch on Steam50 developer announcements, Oct 2025 to Sep 2026 · times in UTC
ChangedSentry turrets balancingUpdated “Sentry turrets” modifier description
Patch notesToday we're releasing Update 0.24, a smaller patch focused on quality of life improvements and bug fixes. This update introduces a new mission modifier called “Sentry Turret”.With summer coming to an end, the team is now back after taking…
RetroFranzHello everyone,Over the past few weeks, we've seen more and more of you asking the same question: "When is the new map coming?"Seeing that excitement around the next map honestly means a lot to us. It's a great sign that so many of you are…
RetroFranzToday, we are releasing update 0.23, an intermediate patch like the ones we plan to publish between major roadmap milestones throughout Early Access.Thank you to everyone who continues to share feedback on Discord and the Steam…
NoLaSPChangedReorder public sessions list: those which can be joined are now on top of the list
Patch notesToday we're releasing Update 0.22, a smaller patch focused on quality of life improvements and bug fixes.This update introduces a few requested features, including the ability to reconnect to an ongoing mission after a disconnection…
RetroFranzChangedModified wording in ID_005’s codex for more clarityFixedFixed some navigation problems for ID_005
Patch notesToday, we are releasing update 0.21 for Species: Unknown.This update introduces a new specimen, the first major new specimen added to the game since the beginning of Early Access. It is one of the biggest gameplay additions we have worked…
RetroFranzThe 0.21 update will release on Thursday, May 21st. It introduces a new specimen aboard the HSS Hawking, marking the first major addition to the bestiary since the beginning of Early Access.We wanted to take a moment, one week ahead of…
RetroFranzToday, we are releasing update 0.20, an intermediate patch like the ones we plan to publish between major roadmap milestones throughout Early Access.This update introduces a new mission modifier, improves the readability of certain menus…
RetroFranzBalancing“No Map” modifier can’t happen on easy contracts“No Map” bonus bounty increased to 500FixedFixed modifiers “Low Power System” and “No Map” now applied on bounty calculationsFixed “No Map” modifier icon now displayed on score page
Patch notesProximity Chat & Radio are now live: distance matters, walls matter.Today, we are releasing update 0.19. Proximity Chat is now live, bringing more tension, sometimes chaos, and unforgettable moments to your co-op sessions. This update is an…
RetroFranzToday, we are releasing update 0.18, an intermediate patch like the ones we plan to publish between major roadmap milestones.This update is based on feedback shared by players. It also includes new features, adjustments, accessibility…
RetroFranzAs part of the Steam Spring Sale, Species: Unknown is on sale for the first time since its Early Access release. This is simply the lowest price ever offered since launch 5 months ago.The perfect time to join the adventure and the 280,000…
RetroFranzToday, we are releasing update 0.17, an intermediate patch like the ones we plan to publish between major roadmap milestones.This update is based on feedback shared by players. It also includes new features, adjustments, accessibility…
RetroFranzFixedFixed swimming creatures stuck outside their jarsPotential fix of revolver sometimes absent in mission for client (causing interaction and animation bugs)Fixed wrong magazine size displayed in upgrade menu for Pistol - upgrade II
Patch notesToday we are releasing update 0.16, an intermediate patch similar to those we plan to publish between the major milestones of the roadmap.This update is based on feedback shared by players. It also includes new features, adjustments…
RetroFranzDue to a Epic Online Service (EOS) update, the multiplayer servers will be taken offline Thursday, 5 March, at 2:00 AM ET (New York) / 08:00 CET (Paris) with maximum 3 hours of degraded availability.Official statement from EOS : EOS…
RetroFranzWe wanted to take a moment to say thank you: you are now more than 250,000 players on Species: Unknown.With 94% positive reviews and nearly 300,000 wishlists, these are numbers that feel incredible to us when we take the time to look at…
RetroFranzFixedFixed broken controller navigation on codex and genetic lab screensFixed swimming creatures could not enter the flooded rooms in the machine areaFixed colored canister could get stuck in the floor in hydroponic farm storage roomFixed…
Patch notesChangedFixed inconsistencies in specimens’ navigation with open/closed doorsFixed all players stuck in black screen if one client disconnects during vortex cinematics
Patch notesToday we are releasing update 0.15.0, a patch update like the ones we plan to publish between the major milestones of the roadmap.This update is based on feedback provided by players. It also includes adjustments, accessibility…
RetroFranzFixedFixed one colored canister (lab) which could disappear
Patch notes\ 2 weeks of Lab: what we observed and what we are working onThe Lab has now been available for two weeks. First of all: thank you for your enthusiasm. Thank you as well for the time you have spent testing, discussing, streaming…
RetroFranzFixedFixed colored canister (lab) could spawn inside a wallFixed weapons could spawn in wallsFixed objects thrown into anomalies (experimental labs) could get stuck and make the anomaly malfunctionFixed invisible barrier was applied to…
Patch notesA brand-new playable quarter is available, inviting you back into Species: Unknown to explore, survive, and face new challenges. This update marks a step in the evolution of the game, with a fresh environment designed to renew the…
RetroFranzFixedFixed some cases of the game being in OFFLINE status for no apparent reason (Note: fixed some cases, but not all)Fixed ID_008 stuck if IEM explosion is triggered in the ventsFixed possibility to climb on a table in the canteenFixed…
Patch notesThe next major update for Species: Unknown is planned for late January. We are currently in the final production phase, and we wanted to take some time to share an update on the development of the Lab.This devlog is not an announcement of…
RetroFranzChanged“Streamer mode” setting now also hides the session code when typing in “Join By Code” menuSwitched back to Shader Model 6 (better performance on newer machines)Added a “DirectX 11” launch option to allow better compatibility with…
Patch notesFixedFixed a regression on ID_008's behavior
Patch notesFixed\ Fixed broken Plushie interaction
Patch notesToday we are releasing update 0.12.0, a patch update like the ones we plan to publish between the major milestones of the roadmap.This update is based on feedback provided by players. It mainly includes balancing adjustments, accessibility…
RetroFranzBalancingSmall nerf of ID_008's berserk modeFixedFix dead skeleton could stay standing
Patch notesToday we are releasing update 0.11.2, a patch update like the ones we plan to publish between the major milestones of the roadmap.This update is based on feedback provided by players. It mainly includes balancing adjustments, accessibility…
Patch notesSince the launch of the Early Access, you’ve been playing… and above all, exploring Species: Unknown with friends. That’s exactly the spirit of the game, and seeing you experience these moments together is incredibly motivating for…
RetroFranzToday, we get to celebrate a milestone we never expected to reach so quickly: more than 100,000 players have joined Species: Unknown since the Early Access launch exactly one month ago. For a small team like ours, this is huge.Thank you to…
RetroFranzSince the launch of Early Access, we’ve been receiving an impressive amount of messages, ideas, and feedback : sometimes brilliant, sometimes surprising, sometimes very direct. And that’s exactly what we wanted: an open and human dialogue…
TheRetroMonkeyToday we are releasing update 0.10.0, a regular update like the ones we plan to publish between the major milestones of the roadmap. Once again, it exists thanks to you: your messages, your videos, your discussions on Discord, and all the…
TheRetroMonkeyFixed - Fixed Discovery contract regression : wrong number of respawns applied + modifiers not displayed on HUD - Fixed ID_008 stuck when its shield breaks while in vents
Patch notesChanged - Icon and text adjustments on "Power activated" modifier - Capped FPS at 120 (while we work on an option to choose your limit) Max frame rate setting now available in update 0.10.0 Fixed - Fixed Minimap upgrades not working for…
Patch notesToday, we’d like to share an honest and concrete look at what’s coming in the next few weeks and months. This roadmap blends new content, community-driven improvements, and our commitment to keeping quality at the heart of the project.Since…
WanatiffFixed Multiple interaction issues Added Specific mention "See full map in Command Deck" in Kill and Black Box missions briefs
Patch notesChanged - Keep sound on when game is in background - Less chance of appearance for "no category 1 weapon" modifier - Capture now doesn't fail Extraction/Destruction missions - Various gameplay balancing Fixed - fixed ID_009 captured out of…
Patch notesIt’s now been a week since Species: Unknown launched in Early Access. And what an intense week it’s been! We wanted to take a moment to share some numbers and reflections on this exciting beginning. Because Early Access is, above all, a…
WanatiffAdded - Add security for zombies who could get stuck and prevent specimen from appearing Fixed - Fix Shuttle upgrade terminal sometimes bought the wrong item - Prevent Plushie from getting stuck on lobby table
Patch notesAdded - Generate more contracts in Nightmare difficulty Changed - "No weapon" text on ammo box if no weapon owned Fixed - Fix infinite insertion of security passes on clients - Fix modifiers on HUD not cleared when back from mission - Fix…
Patch notes🚀The moment has finally arrived, Species: Unknown Early access is officially available! 💥The game is 10% off for launch week, so grab your squad and dive in together! - Ends Nov 4💥After two years of development, our team is thrilled to…
Wanatiff⏰ 2 days before release! Alongside the game, we’ll also be offering a Supporter Pack, designed for those who want to go a little further and support the studio and the development of Species: Unknown during Early Access.⭐The Supporter Pack…
WanatiffSpecies: Unknown is a game where the cooperative aspect is very important to us, and one in which we have put a lot of energy. Our greatest satisfaction isn’t gaining just one more player, it’s seeing a group of friends experience a mission…
WanatiffSteam Next Fest starts now, and it’s the perfect opportunity to jump into the Demo of Species: Unknown! Gather your friends, grab your gear, and team up to survive the horrors lurking in the dark corners of the HSS Hawking. This is your…
WanatiffEverything Steam lists as add-on content for this game, newest first. Prices are left out on purpose: the store answers this page in one currency and it is not the reader's.
| Name | Platforms | Released |
|---|---|---|
| Species: Unknown - Supporter Pack | Windows | 23 Oct 2025 |
What Steam runs, and with what. Straight from the app configuration.
| Description | Executable | Arguments | Platform | |
|---|---|---|---|---|
| Launch | SpeciesUnknown.exe | -nohmd | any | |
| with DirectX11 compatibility (may reduce crashes) | SpeciesUnknown.exe | -nohmd -dx11 | any |
The folders Steam Cloud syncs. The root is a token Steam uses for a location on your own machine, not a path this page can know.
| Root | Folder | Files |
|---|---|---|
WinAppDataLocal | SpeciesUnknown/Saved/SaveGames | SaveGame_Progress.sav |
It runs on public data and somebody's spare time.
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