Games like Starless
Games like Starless include Alien: Isolation, Five Nights at Freddy's: Security Breach, Dead Space, SILENT HILL f, and Lethal Company. We matched them by the tags players give Starless on Steam (Multiple Endings, Stealth, Horror, Psychological Horror, and Sci-fi): closest matches first, and among equally close ones the better-known games.

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

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

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

SILENT HILL f
Shared: Horror · Psychological Horror · Survival Horror

Lethal Company
Shared: Horror · Survival Horror · Psychological Horror

Hello Neighbor
Shared: Horror · Stealth · Survival Horror

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

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

SOMA
Shared: Horror · Psychological Horror · Sci-fi

Darkwood
Shared: Horror · Psychological Horror · Survival Horror

The Outlast Trials
Shared: Horror · Psychological Horror · Stealth

Outlast
Shared: Horror · Psychological Horror · Survival Horror

Pacify
Shared: Horror · Psychological Horror · Survival Horror

SILENT HILL 2
Shared: Horror · Psychological Horror · Survival Horror

Amnesia: The Bunker
Shared: Horror · Stealth · Survival Horror

OMORI
Shared: Psychological Horror · Multiple Endings · Horror

Dead by Daylight
Shared: Horror · Survival Horror · Stealth

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

Mad Father
Shared: Horror · Psychological Horror · Survival Horror

The Evil Within 2
Shared: Horror · Psychological Horror · Survival Horror

Rise of the Tomb Raider™
Shared: Action-Adventure · Exploration · Female Protagonist

The Dark Pictures Anthology: House of Ashes
Shared: Multiple Endings · Horror · Psychological Horror

Granny Remake
Shared: Horror · Stealth · Psychological Horror

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