Games like The Lighthouse
Games like The Lighthouse include Phasmophobia, Mouthwashing, Poppy Playtime, MiSide, and No, I'm not a Human. We matched them by the tags players give The Lighthouse on Steam (Horror, Thriller, First-Person, Atmospheric, and Psychological Horror): closest matches first, and among equally close ones the better-known games.

Phasmophobia
Shared: Horror · Psychological Horror · First-Person

Mouthwashing
Shared: Horror · Psychological Horror · Atmospheric

Poppy Playtime
Shared: Horror · First-Person · Psychological Horror

MiSide
Shared: Horror · Psychological Horror · First-Person

No, I'm not a Human
Shared: Horror · Psychological Horror · Atmospheric

Summer of '58
Shared: Horror · Thriller · Atmospheric

Sally Face - Episode One
Shared: Horror · Psychological Horror · Atmospheric

Firework
Shared: Horror · Psychological Horror · Atmospheric

SOMA
Shared: Horror · Atmospheric · Psychological Horror

Firewatch
Shared: Atmospheric · First-Person · Mystery

What Remains of Edith Finch
Shared: Atmospheric · First-Person · Mystery

Layers of Fear (2016)
Shared: Horror · Atmospheric · Psychological Horror

Outlast
Shared: Horror · First-Person · Atmospheric

Fears to Fathom - Ironbark Lookout
Shared: Horror · Atmospheric · Thriller

Unheard - Voices of Crime
Shared: Thriller · Mystery · Detective

The Painscreek Killings
Shared: Horror · Mystery · Investigation

Subliminal
Shared: Psychological Horror · Atmospheric · Thriller

Demonologist
Shared: Horror · Psychological Horror · First-Person

Little Nightmares II
Shared: Horror · Atmospheric · Psychological Horror

Return of the Obra Dinn
Shared: Atmospheric · Mystery · First-Person

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

Detention
Shared: Horror · Atmospheric · Psychological Horror

Lethal Company
Shared: Horror · First-Person · Psychological Horror

Amnesia: A Machine For Pigs
Shared: Horror · Atmospheric · First-Person