Games like LUNA: Obscura
Games like LUNA: Obscura include Alien: Isolation, Lethal Company, SOMA, Outer Wilds, and Dead Space. We matched them by the tags players give LUNA: Obscura on Steam (Psychological Horror, Horror, Stealth, Sci-fi, and Atmospheric): closest matches first, and among equally close ones the better-known games.

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

Lethal Company
Shared: Horror · Psychological Horror · Exploration

SOMA
Shared: Psychological Horror · Horror · Atmospheric

Outer Wilds
Shared: Exploration · Space · Atmospheric

Dead Space
Shared: Horror · Psychological Horror · Sci-fi

Escape the Backrooms
Shared: Horror · Psychological Horror · Exploration

Prey
Shared: Sci-fi · Horror · Space

ROUTINE
Shared: Psychological Horror · Sci-fi · Atmospheric

Outlast
Shared: Horror · Psychological Horror · Atmospheric

Mouthwashing
Shared: Psychological Horror · Horror · Atmospheric

Little Nightmares II
Shared: Horror · Psychological Horror · Atmospheric

Five Nights at Freddy's: Secret of the Mimic
Shared: Horror · Exploration · Stealth

The Outlast Trials
Shared: Horror · Psychological Horror · Stealth

Iron Lung
Shared: Horror · Psychological Horror · Atmospheric

Inside the Backrooms
Shared: Horror · Psychological Horror · Exploration

Pacify
Shared: Horror · Psychological Horror · Exploration

Observation
Shared: Horror · Sci-fi · Space

Five Nights at Freddy's: Security Breach
Shared: Horror · Stealth · Exploration

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

SILENT HILL: Townfall
Shared: Horror · Psychological Horror · Exploration

Little Nightmares
Shared: Horror · Atmospheric · Psychological Horror

MiSide
Shared: Psychological Horror · Horror · Atmospheric

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

Darkwood
Shared: Horror · Psychological Horror · Atmospheric