Games like The Lightkeeper
Games like The Lightkeeper include Summer of '58, Fears to Fathom - Ironbark Lookout, SOMA, Amenti, and Mouthwashing. We matched them by the tags players give The Lightkeeper on Steam (Horror, Adventure, Atmospheric, Psychological Horror, and Dark): closest matches first, and among equally close ones the better-known games.

Summer of '58
Shared: Horror · Atmospheric · Psychological Horror

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

SOMA
Shared: Horror · Atmospheric · Psychological Horror

Amenti
Shared: Horror · Adventure · Atmospheric

Mouthwashing
Shared: Horror · Psychological Horror · Atmospheric

ROUTINE
Shared: Atmospheric · Psychological Horror · Adventure

Bad Parenting 1: Mr. Red Face
Shared: Horror · Adventure · Psychological Horror

Firewatch
Shared: Adventure · Atmospheric · Exploration

Little Nightmares II
Shared: Horror · Adventure · Atmospheric

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

Little Nightmares
Shared: Horror · Adventure · Atmospheric

What Remains of Edith Finch
Shared: Atmospheric · Adventure · Exploration

Psalm 5:9-13
Shared: Horror · Psychological Horror · Exploration

Visage
Shared: Horror · Psychological Horror · Dark

Inside the Backrooms
Shared: Horror · Psychological Horror · Adventure

Welcome to Kowloon
Shared: Horror · Atmospheric · Adventure

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

Darkwood
Shared: Horror · Adventure · Psychological Horror

Still Wakes the Deep
Shared: Horror · Psychological Horror · Atmospheric

Poppy Playtime
Shared: Horror · Dark · Psychological Horror

Graveyard Shift
Shared: Horror · Adventure · Dark

Blair Witch
Shared: Horror · Adventure · Psychological Horror

Outlast
Shared: Horror · Atmospheric · Psychological Horror

Fears to Fathom - Norwood Hitchhike
Shared: Horror · Psychological Horror · Atmospheric