- Games
- HAEX
HAEX
A survival shooter you can play with up to three friends, set in a cold wilderness full of alien threats.
Online co-op for up to 4 players.
- 4 online
Store pages
Playing together
- Online co-op4 players
- Local co-opNot confirmed
- Not confirmedFriends on different platforms, such as PC and PlayStation, can play together.
- Not confirmedA 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 DeckNot testedValve has not rated it yet
About the game
You wake up after a helicopter crash in a cold northern wilderness, under a strange mist. Part of your science team is missing. You gather resources, craft weapons and gear, and use guns and heavy melee against alien creatures and machines that come out of the mist. You have to keep warm and fed, and the deeper you go, the tougher the enemies get.
You can play alone or with up to three friends. Your character and the worlds you play in are saved separately, so you can take your geared-up character into any friend's world. Alien seeds you plant change parts of the land. They open new paths and also bring new dangers.
HAEX is not out yet. The maker plans to start Early Access in 2027 and has not announced an exact date. Until it is out, how it plays with friends is an open question.
How it feels
Kind of game
One lasting world your group settles. You gather, build and push into dangerous places together.
- At its heart
- Now and then
- Fear
- Story
- Jumping and climbing
- Building and creating
- Sessions
- Ongoing world
Rated on our own feel scale. 3 sources back these ratings.
Screenshots
From the Steam store page. Open one to see it full size.
If you liked HAEX
You will probably enjoy these too. Each one says why.

Rooted
Why it scores 80%
What they share
- Kind of game
- Shared survival world
- About
- Wilderness survival and Science fiction
- Core to both
- Exploring
- Sessions
- Ongoing world
- Notable in both
- Tension and danger, Planning ahead, Fighting, Unlocks and progress
- Co-op
- Online co-op
How Rooted differs
- More building than HAEX
- Harder to master than HAEX
- Coming 2027
- 6 online
Both give your group a hard world to survive in together. Both are about surviving in the wild and science fiction. Both are about exploring places you have not seen.
But more building than HAEX.

Blind Descent
Why it scores 78%
What they share
- Kind of game
- Shared survival world
- About
- Wilderness survival and Science fiction
- Core to both
- Exploring
- Notable in both
- Tension and danger, Fighting, Unlocks and progress
- Co-op
- Online co-op for up to 4 players
How Blind Descent differs
- One campaign to finish, not one lasting world
- Coming 2 December 2026
- 4 online
Both give your group a hard world to survive in together. Both are about surviving in the wild and science fiction. Both are about exploring places you have not seen.
But one campaign to finish, not one lasting world.

Green Hell
Why it scores 75%
What they share
- Kind of game
- Shared survival world
- About
- Wilderness survival
- Core to both
- Exploring
- Sessions
- Ongoing world
- Notable in both
- Tension and danger, Planning ahead, Unlocks and progress
- Co-op
- Online co-op for up to 4 players
How Green Hell differs
- More building than HAEX
- Harder to master than HAEX
- 4 online
Both give your group a hard world to survive in together. Both are about surviving in the wild. Both give you one lasting world to come back to.
But more building than HAEX.
All co-op facts
Last checked 28 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
- Not confirmed
- Confirmed free setups
- Not confirmed
- 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
- Not confirmed
Sources
7 pages
store.steampowered.comStore page, read 28 October 2026
Backs Online co-op, Most players online, Release status, Genres, Kind of game, Sessions, About, Fear, Tension and danger, Story, Exploring, Jumping and climbing, Building and creating, Fighting, Unlocks and progress, Planning ahead.
- Online co-op: Features list Online Co-op, and the recommended specs ask for a broadband connection. No maker page says online in words, so this rests on the store listing.
- Most players online: The page describes a co-op survival shooter for one to four players, played solo or with up to three friends.
- Release status: Steam says the game is not yet available and is coming to Early Access.
- Genres: Steam lists Action and Adventure, and the text calls it a procedural open-world action-adventure.
- Kind of game: Each group keeps its own saved world and can bring a character into a friend's world. The play is survival in an open world.
- Sessions: Each world keeps its own story and can be revisited, and a new world can be started at any time. Provisional, as no hands-on coverage was found.
- About: The text covers cold, hunger and survival in a sub-arctic wilderness, and a sentient cube of alien technology.
- Fear: User tags include Atmospheric but not Horror. Provisional minor fear.
- Tension and danger: The text says cold kills, and that the world gets more dangerous the deeper you go. Provisional.
- Story: The text sets up a missing science expedition and a cast of characters with their own insights. Provisional minor story.
- Exploring: User tags include Open World and Exploration, and the text sends you to explore alien structures. Provisional.
- Jumping and climbing: The text says alien abilities add moves such as dashing and double-jumping. Provisional minor platforming.
- Building and creating: The text covers crafting weapons and gear and seeds that reshape the land. User tags include Crafting. Provisional minor building.
- Fighting: The text lists gunplay and heavy melee, and user tags include Shooter, FPS and Combat. Provisional.
- Unlocks and progress: The text says you unlock gear, skills and crafting recipes, and every character keeps its own progression.
- Planning ahead: The text describes a deep weapon mod system and tuning your loadout. Provisional.
store.steampowered.comStore data, read 28 October 2026
Backs Steam app ID, Online co-op, Release status, Genres.
- Steam app ID: The opened product is app 3524720.
- Online co-op: Categories include Online Co-op, LAN Co-op and Single-player. LAN Co-op does not count as local co-op.
- Release status: Steam shows the release date as to be announced.
- Genres: Steam lists Action, Adventure and Early Access.
store.steampowered.comStore data, read 28 October 2026
Backs Steam Deck.
- Steam Deck: Valve has not rated the game for Steam Deck.
haexgame.comOfficial site, read 28 October 2026
Backs Online co-op, Most players online, Sessions.
- Online co-op: The page says you can jump into a friend's game with your own gear. It does not use the word online.
- Most players online: The page calls it a co-op survival shooter for one to four players.
- Sessions: Characters and worlds are saved apart, and every world keeps its own story.
deadastronauts.gamesOfficial news, read 28 October 2026
Backs Online co-op, Most players online, Genres, About, Fear, Tension and danger, Fighting, Planning ahead, Sessions.
- Online co-op: The post, dated 2026-06-05, says you can bring a character into any world, including a friend's active game.
- Most players online: The post says the game is played solo or with up to three friends.
- Genres: The maker calls it a first-person survival shooter and an open-world action adventure survival game.
- About: The post covers alien creatures and machines coming out of the mist, plus cold, hunger and thirst in a wilderness.
- Fear: The post calls the game atmospheric and sets it in a mysterious, paranormal mist. Provisional minor fear.
- Tension and danger: The post says the world and its enemies get more dangerous the deeper you push into the mist.
- Fighting: The post lists firearms and heavy melee, and says new threats call for different combat tactics.
- Planning ahead: The post says loadout preparation helps decide how far players get.
- Sessions: The post says progress carries across sessions while each world keeps its own state and storyline.
steamcommunity.comOfficial news, read 28 October 2026
Backs Release date, Release status.
- Release date: The maker's Steam post of 2026-06-09 says the game launches in Early Access in 2027. No month is given, so the year is the precision.
- Release status: The post speaks of launching in Early Access in 2027, so Early Access has not started.
wikidata.orgWikidata, read 28 October 2026
Backs Wikidata item, Release date.
- Wikidata item: The item is a video game with Steam id 3524720.
- Release date: P577 is 2027 at year precision.






