Games like Paranormal Inc.
Games like Paranormal Inc. include Poppy Playtime, Inside the Backrooms, Outlast, Backrooms: Escape Together, and The Forest. We matched them by the tags players give Paranormal Inc. on Steam (Horror, Survival Horror, Puzzle, Thriller, and Realistic): closest matches first, and among equally close ones the better-known games.

Poppy Playtime
Shared: Horror · Puzzle · Survival Horror

Inside the Backrooms
Shared: Horror · Survival Horror · Puzzle

Outlast
Shared: Horror · Survival Horror · Psychological Horror

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

The Forest
Shared: Horror · Survival Horror · Survival

Pacify
Shared: Horror · Survival Horror · Psychological Horror

Resident Evil 7 Biohazard
Shared: Horror · Survival Horror · Puzzle

Firework
Shared: Horror · Puzzle · Mystery

SOMA
Shared: Horror · Survival Horror · Psychological Horror

Lethal Company
Shared: Horror · Survival Horror · Psychological Horror

Amnesia: The Dark Descent
Shared: Horror · Survival Horror · Puzzle

The Room Two
Shared: Puzzle · Horror · Mystery

Bendy and the Ink Machine
Shared: Horror · Puzzle · Survival Horror

Ghost Watchers
Shared: Horror · Survival Horror · Puzzle

Subnautica 2
Shared: Horror · Survival Horror · Survival

Phasmophobia
Shared: Horror · Psychological Horror · Demons

The Outlast Trials
Shared: Horror · Survival Horror · Psychological Horror

Dread Flats
Shared: Horror · Survival Horror · Thriller

Outlast 2
Shared: Horror · Survival Horror · Psychological Horror

Garten of Banban
Shared: Horror · Puzzle · Survival Horror

DEVOUR
Shared: Horror · Survival Horror · Psychological Horror

Escape the Backrooms
Shared: Horror · Survival Horror · Psychological Horror

MADiSON
Shared: Horror · Survival Horror · Puzzle

Five Nights at Freddy's
Shared: Horror · Survival Horror · Psychological Horror