Games like Rahasya: The Revelation
Games like Rahasya: The Revelation include Poppy Playtime, Outlast, SOMA, Resident Evil 7 Biohazard, and MiSide. We matched them by the tags players give Rahasya: The Revelation on Steam (Horror, Psychological Horror, Survival Horror, Atmospheric, and Puzzle): closest matches first, and among equally close ones the better-known games.

Poppy Playtime
Shared: Horror · Puzzle · Survival Horror

Outlast
Shared: Horror · Survival Horror · Psychological Horror

SOMA
Shared: Horror · Psychological Horror · Atmospheric

Resident Evil 7 Biohazard
Shared: Horror · Survival Horror · First-Person

MiSide
Shared: Psychological Horror · Horror · Story Rich

Garten of Banban
Shared: Horror · Psychological Horror · First-Person

Bendy and the Ink Machine
Shared: Horror · First-Person · Puzzle

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

Sally Face - Episode One
Shared: Psychological Horror · Horror · Story Rich

Amnesia: The Dark Descent
Shared: Horror · Psychological Horror · Survival Horror

Firework
Shared: Horror · Puzzle · Psychological Horror

Outlast 2
Shared: Horror · Psychological Horror · Survival Horror

Little Nightmares II
Shared: Horror · Puzzle · Psychological Horror

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

Little Nightmares
Shared: Horror · Atmospheric · Puzzle

Resident Evil Village
Shared: Horror · Survival Horror · First-Person

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

Five Nights at Freddy's
Shared: Horror · Survival Horror · Psychological Horror

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

Garten of Banban 2
Shared: Horror · Psychological Horror · Puzzle

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

Amnesia: Rebirth
Shared: Horror · Puzzle · First-Person

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

Penumbra Overture
Shared: Horror · Survival Horror · First-Person