Co-op games like Unfortunate Spacemen
Below are 8 cooperative Steam games similar to Unfortunate Spacemen, ranked by player overlap and content similarity. Every pick supports cooperative play — online co-op, LAN co-op, or shared/split-screen — so you can play with friends right out of the box. imho.run pulls from the same Steam category data Valve uses internally, so "Co-op" here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Unfortunate Spacemen page.
Ranked picks
- 1
Sincognito
Online Co-op alternative to Unfortunate Spacemen — playable with friends. Shares Action and Strategy with Unfortunate Spacemen.
An social deduction investigation horror game where one of you is secretly possessed by a Deadly Sin. Use stealth and proximity chat to cooperate or deceive as you gather clues and compare findings to deduce which Sin is haunting the castle.
- 2
Guillotine
Online Co-op alternative to Unfortunate Spacemen — playable with friends. Shares Indie with Unfortunate Spacemen.
Guillotine is a multiplayer game of social deduction, with a pinch of survival. You're in a tavern in the woods, but someone is a necromorph hungry for human meat. Guillotine the necromorph, or get eaten alive.
- 3
Buried Whispers
Online Co-op alternative to Unfortunate Spacemen — playable with friends. Shares Action with Unfortunate Spacemen.
A chaotic social deduction game for up to 10 players. Collaborate to complete a demonic ritual, but be careful: secret moles among you are trying to prevent it. Anyone can kill anyone, sacrifice your health to cast multiple votes, and dig tunnels inside fully destructible, randomly generated caves.
- 4
Imposters: Countdown
Online Co-op alternative to Unfortunate Spacemen — playable with friends.
Complete tasks & mini-games. Report bodies. Call voting sessions. Hack the station. Overload the reactor. Betray your friends. An online party game of teamwork and betrayal for 4-12 players...in third person! Escape the ship before the countdown runs out! Don't get fooled by the rogue AI.
- 5
Castle of Mist
Online Co-op alternative to Unfortunate Spacemen — playable with friends. Shares Action and Strategy with Unfortunate Spacemen.
Castle of Mist is a first-person shooter with Roguelike random elements set in a medieval-style adventure. Players control different characters, choose various items to create unique playstyles, and ultimately defeat various monsters and the dragon attacking the castle to achieve victory.
- 6
MindHunt
Online Co-op alternative to Unfortunate Spacemen — playable with friends. Shares Strategy and Indie with Unfortunate Spacemen.
MindHunt is a solo/multiplayer detective like game (1-10 players), where you as an agent try to find out which androids are infected in order to shut them down! Well, if you are the infected one, you better blend with other androids and complete all tasks necessary!
- 7
Alterum
Online Co-op alternative to Unfortunate Spacemen — playable with friends. Shares Action and Indie with Unfortunate Spacemen.
Social deduction horror game with voice recognition, full of betrayal and dark rituals. Awaken in a cult of restless souls: spells spoken aloud summon powers - or doom. Alliances or deceit: can you distinguish truth when a word is a curse?
- 8
Deep Dark Space
Online Co-op alternative to Unfortunate Spacemen — playable with friends. Shares Action and Indie with Unfortunate Spacemen.
Deep Dark Space is a 4-player online co-op horror experience set in space. Explore abandoned stations, gather clues, and uncover the monster lurking in the dark. Trust no one — paranoia runs high as hidden betrayals threaten your survival.