- Games
- Abiotic Factor
Abiotic Factor
Turn office supplies into survival tools as your science team searches a broken research facility for an escape.
Online co-op for up to 24 players, with crossplay.
- 24 online
- Crossplay
Where to buy
Playing together
- Online co-op24 players
- Local co-opNot confirmed
- YesPC, PlayStation, XboxFriends on different platforms, such as PC and PlayStation, can play together.
- YesA friend can join or leave while you are already playing, without starting over.
- Not confirmedFriends play free with a Friend's Pass or similar.
- Steam DeckPlayableValve's own rating
About the game
You start work at an underground research facility just as its experiments break loose. Offices become supply rooms, furniture becomes shelter and unfamiliar creatures become threats or food. You collect scraps, invent equipment and explore linked sectors and portal worlds while looking for a way out. Hunger, thirst, sleep and toilet needs keep even a clever scientist busy.
You can play online with a standard group of up to six scientists. Different backgrounds give you a head start in jobs such as cooking, building or fighting. You can split chores at the base, then prepare supplies and head out together. New tools and shortcuts let you push farther through the facility. The written escape plot gives your evenings direction, while strange inventions and everyday mishaps leave room for jokes.
How it feels
Kind of game
One lasting world your group settles. You gather, build and push into dangerous places together.
- A big part
- Now and then
- Calm and coziness
- Jumping and climbing
- Puzzles and figuring out
- Getting better
- Sessions
- Campaign to finish
- About
- Science lab, Science fiction, Scavenging, Monsters
Rated on our own feel scale. 5 sources back these ratings.
Screenshots
From the Steam store page. Open one to see it full size.
If you liked Abiotic Factor
You will probably enjoy these too. Each one says why.
Sons Of The Forest
Why it scores 81%
What they share
- Kind of game
- Shared survival world
- About
- Scavenging and Monsters
- Notable in both
- Fear, Time to hang out, Tension and danger, Planning ahead, Fighting, Unlocks and progress
- Core to both
- Exploring, Building and creating
- Co-op
- Online co-op
How Sons Of The Forest differs
- One lasting world, not one campaign to finish
- 8 online
Both give your group a hard world to survive in together. Both are about scavenging for loot and monsters that hunt you. Both are often scary.
But one lasting world, not one campaign to finish.
The Forest
Why it scores 81%
What they share
- Kind of game
- Shared survival world
- About
- Scavenging and Monsters
- Notable in both
- Fear, Story, Tension and danger, Planning ahead, Fighting, Unlocks and progress
- Core to both
- Exploring, Building and creating
- Co-op
- Online co-op
How The Forest differs
- One lasting world, not one campaign to finish
- 8 online
Both give your group a hard world to survive in together. Both have a story you follow together. Both are about scavenging for loot and monsters that hunt you.
But one lasting world, not one campaign to finish.
The Lord of the Rings: Return to Moria
Why it scores 79%
What they share
- Kind of game
- Shared survival world
- Notable in both
- Story, Time to hang out, Building and creating, Exploring, Tension and danger, Fighting
- Core to both
- Unlocks and progress
- Sessions
- Campaign to finish
- Co-op
- Online co-op
How The Lord of the Rings: Return to Moria differs
- Calmer and less chaotic than Abiotic Factor
- 8 online
- Crossplay
Both give your group a hard world to survive in together. Both are easy to play while you chat. Both have upgrades that carry over.
But calmer and less chaotic than Abiotic Factor.
All co-op facts
Last checked 24 October 2026. The small numbers link to the page that states each fact.
Co-op
- 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
The checked computer full-base edition has a paid base-game access model. Demos, trials, guest passes, platform sharing and temporary grants do not establish ongoing free base co-op.
- 4714
- Confirmed free setups
- Does not apply
- Only one of you needs to buy it
- Not confirmed
Sources
14 pages
abioticfactor.comOfficial site, read 24 October 2026
Backs Online co-op, Genres, About, Kind of game, Working in sync, Planning ahead.
- Online co-op: Calls it online cooperative survival crafting.
- Genres: Explicitly calls it survival crafting.
- About: Scientists scavenge laboratory supplies while facing paranormal creatures.
- Kind of game: A science team turns rooms into a shared base.
- Working in sync: Backgrounds support cooking, construction and defence jobs.
- Planning ahead: Traits, equipment and prepared defences shape the team plan.
github.comOfficial support page, read 24 October 2026
Backs Most players online, Crossplay, Crossplay between.
- Most players online: The developer-linked guide documents a maximum of 24 on dedicated servers. Six is the default and recommended group. Higher counts show a warning before joining.
- Crossplay: Optional platform restrictions disable crossplay, confirming that unrestricted servers support it.
- Crossplay between: Steam PC, PS5 and Xbox Series can mix. Optional restricted groups are Steam only, PlayStation only, or Xbox with Windows Store. Developer K8 links this guide from the pinned server post.
steamcommunity.comOfficial news, read 24 October 2026
Backs Crossplay, Release status, Friends can join mid-game, Voice chat by distance.
- Crossplay: Cold Fusion launch notes say crossplay is live with PS5 and Xbox players joining Steam scientists.
- Release status: The posted 1.0 update records the full release.
- Friends can join mid-game: The shipped Cold Fusion notes explicitly address late-joining clients in an active session. This does not establish host migration.
- Voice chat by distance: The developer identifies the built-in voice as proximity voice. Earlier press evidence separately describes distance fading.
store.steampowered.comStore page, read 24 October 2026
Backs Release date, Release status, Building and creating, Unlocks and progress, Free base co-op.
- Release date: Shows full release on 22 July 2025.
- Release status: The current page sells the full game. A lingering user tag still says Early Access.
- Building and creating: The maker describes turning offices into bases with crafting and cooking stations.
- Unlocks and progress: Skills, perks and crafted equipment advance the scientists.
- Free base co-op: The checked computer full-base edition has a paid base-game access model. Demos, trials, guest passes, platform sharing and temporary grants do not establish ongoing free base co-op.
store.steampowered.comStore data, read 24 October 2026
Backs Steam app ID, Platforms.
- Steam app ID: Identifies Abiotic Factor as app 427410.
- Platforms: Windows is the released Steam build.
store.steampowered.comStore data, read 23 October 2026
Backs Steam Deck.
- Steam Deck: Valve rates the game Playable on Steam Deck.
store.playstation.comStore page, read 24 October 2026
Backs Platforms, Free base co-op.
- Platforms: The released product is for PS5.
- Free base co-op: The checked PlayStation full-base edition has a paid base-game access model. Demos, trials, guest passes, platform sharing and temporary grants do not establish ongoing free base co-op.
xbox.comStore page, read 24 October 2026
Backs Platforms.
- Platforms: Lists Xbox Series and PC. Online co-op is two to six in ordinary sessions.
pcgamer.comPress, read 24 October 2026
Backs Sessions, Story, Exploring, Fighting, Time to hang out, Calm and coziness.
- Sessions: PC Gamer, 2025-07-22, follows an escape campaign with a finale.
- Story: The main goals carry an authored escape story.
- Exploring: Connected sectors and strange portal worlds drive the group onward.
- Fighting: Regular fighting uses improvised weapons and later inventions.
- Time to hang out: Quiet periods at home let friends talk between expeditions.
- Calm and coziness: Home provides pauses between dangerous trips.
playday.onePress, read 24 October 2026
Backs Voice chat by distance, Fear, Tension and danger, Jumping and climbing, Puzzles and figuring out, Getting better.
- Voice chat by distance: DayOne, 2025-07-22, says built-in voices become faint as scientists move apart.
- Fear: Its review describes frightening portal worlds and dread after dark.
- Tension and danger: Resource trips become risky when the facility loses power.
- Jumping and climbing: DayOne, July 22, 2025, describes timed jumps during the sleep minigame. Sleep is part of the normal survival routine. This supports minor platforming, rather than a traversal focus.
- Puzzles and figuring out: Recipe research asks players to identify components, but the review finds it simple.
- Getting better: Early ranged tools and survival routines take some practice.
gaming.netPress, read 23 October 2026
Backs Laughter and chaos.
- Laughter and chaos: Gaming.net, published 2025-07-25 and updated 2026-04-02, describes laughs from bodily accidents and mishaps.
steamcommunity.comOfficial support page, read 24 October 2026
Backs Most players online.
- Most players online: K8 is marked developer and says the team created the linked dedicated-server guide. This establishes maker authorship of the exact technical support page.
steamcommunity.comOfficial news, read 24 October 2026
Backs Most players online.
- Most players online: The developer's 1.1.0 notes link the current launch-parameter page. That support page documents the implemented ceiling of 24, with six recommended.
xbox.comStore page, read 24 October 2026
Backs Free base co-op.
- Free base co-op: The checked Xbox full-base edition has a paid base-game access model. Demos, trials, guest passes, platform sharing and temporary grants do not establish ongoing free base co-op.