Games like Lightless
Games like Lightless include Poppy Playtime, Mouthwashing, Outlast, Layers of Fear (2016), and Firewatch. We matched them by the tags players give Lightless on Steam (Horror, Psychological Horror, Thriller, Adventure, and Crime): closest matches first, and among equally close ones the better-known games.
Poppy Playtime
Shared: Horror · Psychological Horror · First-Person
Mouthwashing
Shared: Horror · Psychological Horror · Atmospheric
Outlast
Shared: Horror · Psychological Horror · First-Person
Layers of Fear (2016)
Shared: Horror · Psychological Horror · Atmospheric
Firewatch
Shared: Adventure · Atmospheric · First-Person
No, I'm not a Human
Shared: Horror · Psychological Horror · Atmospheric
Fears to Fathom - Ironbark Lookout
Shared: Horror · Psychological Horror · Thriller
SOMA
Shared: Horror · Psychological Horror · Atmospheric
Summer of '58
Shared: Horror · Thriller · Psychological Horror
MiSide
Shared: Psychological Horror · Horror · First-Person
The Park®
Shared: Horror · Psychological Horror · Adventure
Little Nightmares II
Shared: Horror · Adventure · Psychological Horror
What Remains of Edith Finch
Shared: Atmospheric · Adventure · First-Person
Outlast 2
Shared: Horror · Psychological Horror · First-Person
Phasmophobia
Shared: Horror · Psychological Horror · First-Person
Fears to Fathom - Woodbury Getaway
Shared: Psychological Horror · Horror · Adventure
Amnesia: A Machine For Pigs
Shared: Horror · Psychological Horror · Atmospheric
Garten of Banban
Shared: Horror · Psychological Horror · First-Person
Still Wakes the Deep
Shared: Horror · Psychological Horror · First-Person
Little Nightmares
Shared: Horror · Adventure · Atmospheric
Blair Witch
Shared: Horror · Psychological Horror · Adventure
Alan Wake
Shared: Horror · Adventure · Thriller
Visage
Shared: Horror · Psychological Horror · First-Person
Fears to Fathom - Norwood Hitchhike
Shared: Horror · Psychological Horror · Thriller