Games like Paranormal Mutagens: Cargo
Games like Paranormal Mutagens: Cargo include Pacify, Outer Wilds, Prey, Lethal Company, and Five Nights at Freddy's: Security Breach. We matched them by the tags players give Paranormal Mutagens: Cargo on Steam (Casual, Horror, Space, Exploration, and 3D): closest matches first, and among equally close ones the better-known games.

Pacify
Shared: Horror · Exploration · First-Person

Outer Wilds
Shared: Space · Exploration · Horror

Prey
Shared: Space · Horror · Sci-fi

Lethal Company
Shared: Horror · First-Person · Exploration

Five Nights at Freddy's: Security Breach
Shared: Horror · First-Person · Exploration

Starfield
Shared: Space · Exploration · Sci-fi

SOMA
Shared: Horror · Sci-fi · Exploration

No Man's Sky
Shared: Space · Exploration · Sci-fi

R.E.P.O.
Shared: Horror · 3D · First-Person

Phasmophobia
Shared: Horror · First-Person · Supernatural

Escape the Backrooms
Shared: Horror · Exploration · First-Person

The Callisto Protocol™
Shared: Horror · Space · Sci-fi

Five Nights at Freddy's: Secret of the Mimic
Shared: Horror · First-Person · Exploration

Buckshot Roulette
Shared: Horror · First-Person · Dark

SpaceEngine
Shared: Casual · Space · Sci-fi

Alien: Isolation
Shared: Horror · Sci-fi · Space

Dead Space
Shared: Horror · Space · Sci-fi

Bramble: The Mountain King
Shared: Horror · Dark Fantasy · 3D

Dead Space (2008)
Shared: Horror · Space · Sci-fi

Elite Dangerous
Shared: Space · Exploration · Sci-fi

Subnautica 2
Shared: Horror · Exploration · First-Person

The Mortuary Assistant
Shared: Horror · Demons · First-Person

ROUTINE
Shared: Sci-fi · Horror · First-Person

Subnautica
Shared: Horror · Exploration · First-Person