Games like Unfortunate Spacemen
Games like Unfortunate Spacemen include Dead by Daylight, Phasmophobia, Among Us, Left 4 Dead 2, and Escape the Backrooms. We matched them by the tags players give Unfortunate Spacemen on Steam (Survival Horror, Investigation, Multiplayer, Free to Play, and Comedy): closest matches first, and among equally close ones the better-known games.

Dead by Daylight
Shared: Survival Horror · Multiplayer · Horror

Phasmophobia
Shared: Multiplayer · Horror · Co-op

Among Us
Shared: Multiplayer · Social Deduction · Online Co-Op

Left 4 Dead 2
Shared: Multiplayer · Co-op · Horror

Escape the Backrooms
Shared: Multiplayer · Survival Horror · Horror

R.E.P.O.
Shared: Multiplayer · Horror · Co-op

Pacify
Shared: Multiplayer · Survival Horror · Co-op

The Outlast Trials
Shared: Multiplayer · Survival Horror · Co-op

BIGFOOT
Shared: Survival Horror · Multiplayer · Co-op

PUBG: BATTLEGROUNDS
Shared: Multiplayer · PvP · Co-op

DEVOUR
Shared: Survival Horror · Multiplayer · Horror

Content Warning
Shared: Multiplayer · Horror · Comedy

In Silence
Shared: Multiplayer · Survival Horror · Horror

Barotrauma
Shared: Multiplayer · Survival Horror · Co-op

Apex Legends™
Shared: Multiplayer · Free to Play · PvP

Lethal Company
Shared: Survival Horror · Co-op · Horror

We Were Here
Shared: Free to Play · Co-op · Multiplayer

Once Human
Shared: Multiplayer · Free to Play · Co-op

Backrooms: Escape Together
Shared: Multiplayer · Survival Horror · Horror

Don't Starve Together
Shared: Multiplayer · Co-op · Survival Horror

Paladins®
Shared: Multiplayer · Free to Play · PvP

Marvel Rivals
Shared: Multiplayer · Free to Play · PvP

Sons Of The Forest
Shared: Multiplayer · Survival Horror · Co-op

Shift At Midnight
Shared: Multiplayer · Survival Horror · Horror