Games like Interstellar Holy Spirit
Games like Interstellar Holy Spirit include PEAK, Project Silverfish, Prey, Twisted Tower, and The Exit 8. We matched them by the tags players give Interstellar Holy Spirit on Steam (Exploration, Immersive Sim, FPS, Party Game, and 3D): closest matches first, and among equally close ones the better-known games.

PEAK
Shared: Exploration · First-Person · 3D

Project Silverfish
Shared: Immersive Sim · Exploration · FPS

Prey
Shared: Immersive Sim · FPS · Exploration

Twisted Tower
Shared: Exploration · FPS · First-Person

The Exit 8
Shared: Exploration · Immersive Sim · Horror

Lethal Company
Shared: Exploration · First-Person · Horror

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

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

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

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

Content Warning
Shared: Exploration · Horror · First-Person

Metro Exodus
Shared: FPS · First-Person · Horror

Firewatch
Shared: Exploration · First-Person · Adventure

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

Gloomwood
Shared: Immersive Sim · FPS · Exploration

Amnesia: The Bunker
Shared: Immersive Sim · Horror · First-Person

PILGRIM
Shared: Exploration · Horror · 3D

Hamster Hunter
Shared: Exploration · 3D · First-Person

Fallout 4
Shared: Exploration · First-Person · FPS

Echo Point Nova
Shared: FPS · Exploration · First-Person

Subnautica 2
Shared: Exploration · Horror · First-Person

BioShock™ Remastered
Shared: FPS · First-Person · Horror

S.T.A.L.K.E.R. 2: Heart of Chornobyl - Standard Edition
Shared: FPS · Exploration · First-Person

Species: Unknown
Shared: Exploration · First-Person · Horror