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    2. Species: Unknown

    Species: Unknown

    A co-op horror game where up to four friends take jobs on an abandoned spaceship while something hunts them.

    Online co-op for up to 4 players.

    • 4 online

    Where to buy

    SteamOfficial site
    Species: Unknown store art
    Early access
    • Store art
    • Screenshot 1
    • Screenshot 2
    • Screenshot 3
    • Screenshot 4

    Playing together

    All co-op facts
    • Online co-op4 players
    • Local co-opNot confirmed
    • Not confirmed
    • Not confirmed
    • Not confirmed
    • Steam DeckUnsupportedValve's own rating

    About the game

    You play a contractor sent onto an abandoned spaceship. Each run gives you one job, such as bringing something back or taking something down. A different creature hunts you each time, so part of every run is working out what it is from the clues it leaves, and how to deal with it.

    Up to four people play online, on public or private servers, and you can go alone too. Everyone carries tools like a motion tracker, a shield and a syringe, so you cover each other and patch each other up. Voice chat fades with distance and walls, so a friend who wanders off goes quiet.

    Jobs pay credits for better gear. It is a scary game first, so it suits friends who like a fright together. It is still in early access, on PC only.

    How it feels

    Kind of game

    Chaotic friend hangout

    A group of friends, loose goals and a lot of messing around. Failing is part of the fun, and the best moments are the ones nobody planned.

    At its heart
    Now and then
    • Laughter and chaos
    • Time to hang out
    • Planning ahead

    Rated on our own feel scale. 2 sources back these ratings.

    Screenshots

    If you liked Species: Unknown

    You will probably enjoy these too. Each one says why.

    All 5 matches
    • Ghost Watchers

      Why it scores 86%

      What they share

      Kind of game
      Chaotic friend hangout
      Core to both
      Fear
      Notable in both
      Puzzles and figuring out, Working in sync, Tension and danger, Getting better, Fighting, Unlocks and progress
      Sessions
      Repeatable runs
      Co-op
      Online co-op for up to 4 players
      • 4 online

      Both are chaotic hangouts for a group of friends. Both are often scary. Both make you work things out together.

      No big difference from Species: Unknown.

    • Dark Hours

      Why it scores 85%

      What they share

      Kind of game
      Chaotic friend hangout
      Core to both
      Fear
      About
      Monsters
      Notable in both
      Puzzles and figuring out, Working in sync, Exploring, Tension and danger, Getting better, Unlocks and progress
      Sessions
      Repeatable runs
      Co-op
      Online co-op for up to 4 players

      How Dark Hours differs

      • Less fighting than Species: Unknown
      • 4 online
      • Crossplay

      Both are chaotic hangouts for a group of friends. Both are about monsters that hunt you. Both are often scary.

      But less fighting than Species: Unknown.

    • PILGRIM

      Why it scores 85%

      What they share

      Kind of game
      Chaotic friend hangout
      Core to both
      Fear
      About
      Monsters
      Notable in both
      Working in sync, Exploring, Tension and danger, Getting better
      Sessions
      Repeatable runs
      Co-op
      Online co-op for up to 4 players
      • Early access
      • 4 online

      Both are chaotic hangouts for a group of friends. Both play in runs or missions you repeat. Both are often scary.

      No big difference from Species: Unknown.

    All co-op facts

    Last checked 28 October 2026. The small numbers link to the page that states each fact.

    Co-op

    Online co-op
    Yes
    15
    Most players online
    4
    16
    Fewest players online
    Not confirmed
    Local co-op
    Not confirmed
    Most players on one screen
    Not confirmed
    Split or shared screen
    Not confirmed
    Separate-device co-op
    Not confirmed
    Most players on separate devices
    Not confirmed
    Free base co-op
    No

    Steam sells the game for a price and it is not free to play. A separate free demo exists and does not count. Only a Windows build exists.

    2
    Confirmed free setups
    Does not apply
    Crossplay
    Not confirmed
    Crossplay between
    Not confirmed
    Friends can join mid-game
    Not confirmed
    Only one of you needs to buy it
    Not confirmed
    Voice chat by distance
    Yes
    15

    Platforms

    Platforms
    PC (Windows)
    12
    Single-player editions
    Not confirmed
    Steam Deck
    Unsupported
    3

    Release

    Release status
    Early access
    12
    Release date
    23 October 2025
    2

    Genres

    Genres
    Horror, Action
    24

    Store IDs

    Steam app ID
    2747330
    2
    Wikidata item
    Q135047333
    4

    Sources

    7 pages
    1. store.steampowered.comStore page, read 28 October 2026

      Backs Online co-op, Most players online, Voice chat by distance, Release status, Platforms, Kind of game, Sessions, About, Fear, Tension and danger, Laughter and chaos, Working in sync, Exploring, Fighting, Puzzles and figuring out, Getting better, Unlocks and progress, Planning ahead, Time to hang out.

      • Online co-op: Key features list Online Co-op, and the maker's text says the game is playable in co-op.
      • Most players online: The maker's text says co-op for up to 4 players on private or public servers, or solo. Its Early Access answers say solo or up to 3 friends.
      • Voice chat by distance: The maker's text says Proximity Chat and Radio are available, and that distance and walls matter.
      • Release status: The page carries the Early Access tag and the developer's Early Access answers.
      • Platforms: The system requirements list Windows 10 only.
      • Kind of game: User tags include Online Co-Op and Horror, and the text builds the game around a squad of up to 4 taking contracts.
      • Sessions: Each contract is one run with its own goal, and the credits it pays buy gear for the next run.
      • About: The text puts a mercenary on an abandoned spaceship, hunted by an unknown creature. Tags include Aliens, Sci-fi and Space.
      • Fear: User tags include Horror, Survival Horror and Psychological Horror. The maker's content note lists horror and gore.
      • Tension and danger: The maker's text says something is hunting you through every contract, and that none of them are easy.
      • Laughter and chaos: The maker says proximity chat brings tension and sometimes chaos. There is no Funny tag.
      • Working in sync: The text asks the group to strategize, and lists tools that shield or heal teammates.
      • Exploring: User tags include Exploration. You move through dark ship corridors with a mini-map.
      • Fighting: Guns exist and one contract type is elimination, but the text says guns will not always save you.
      • Puzzles and figuring out: The text asks you to investigate your surroundings and gather clues to identify the threat. User tags include Investigation.
      • Getting better: Each creature has its own behaviors, strengths and weaknesses to learn.
      • Unlocks and progress: Contracts earn credits for gear upgrades, new tools and cosmetics.
      • Planning ahead: The text says each mission demands a specific strategy and asks the group to use its tools well.
      • Time to hang out: The text ties proximity chat to tension in a mission, so talk stays mostly on the task at hand.
    2. store.steampowered.comStore data, read 28 October 2026

      Backs Steam app ID, Release status, Release date, Platforms, Genres, Free base co-op.

      • Release status: Steam lists Early Access among the game's genres.
      • Release date: Steam shows Oct 23, 2025, the day early access began.
      • Platforms: Steam lists Windows only. Mac and Linux are false.
      • Genres: Steam lists Action. The maker's text calls it a survival horror game, which gives Horror.
      • Free base co-op: Steam sells the game for a price and it is not free to play. A separate free demo exists and does not count. Only a Windows build exists.
    3. store.steampowered.comStore data, read 28 October 2026

      Backs Steam Deck.

      • Steam Deck: Valve rates the game Unsupported, for graphics performance.
    4. wikidata.orgWikidata, read 28 October 2026

      Backs Wikidata item, Genres.

      • Genres: Wikidata property P136 lists action game, which agrees with the Action genre.
    5. steamcommunity.comOfficial news, read 28 October 2026

      Backs Voice chat by distance, Online co-op.

      • Voice chat by distance: The update 0.19 post says Proximity Chat and Radio are live, and that distance and walls matter.
      • Online co-op: The same post talks about the game's co-op sessions.
    6. store.steampowered.comOfficial news, read 28 October 2026

      Backs Most players online.

      • Most players online: Patch notes for update 0.23 add a safeguard against more than 4 players in a lobby.
    7. automaton-media.comPress, read 28 October 2026

      Backs Fear, Kind of game, Sessions, Working in sync, Puzzles and figuring out.

      • Fear: Automaton, 2025-10-27, calls it a co-op horror with a strong sense of fear, from the cramped ship and the sound.
      • Kind of game: The same piece says it shares ground with co-op horror games such as Lethal Company, which the catalog files as a chaotic friend hangout.
      • Sessions: It describes a loop of preparing, doing a mission, collecting the reward and preparing for the next one.
      • Working in sync: It describes a team of up to four mercenaries who take jobs together and buy tools like a shield.
      • Puzzles and figuring out: It says you have to read small sounds and bodies to learn what is on board.