Games like Worlds
Games like Worlds include Mouthwashing, No, I'm not a Human, FAITH: The Unholy Trinity, SOMA, and Detention. We matched them by the tags players give Worlds on Steam (Indie, Gore, Horror, Story Rich, and Psychological Horror): closest matches first, and among equally close ones the better-known games.

Mouthwashing
Shared: Horror · Psychological Horror · Story Rich

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

FAITH: The Unholy Trinity
Shared: Horror · Indie · Psychological Horror

SOMA
Shared: Horror · Psychological Horror · Story Rich

Detention
Shared: Indie · Horror · Psychological Horror

Fran Bow
Shared: Psychological Horror · Story Rich · Horror

Lobotomy Corporation | Monster Management Simulation
Shared: Story Rich · Psychological Horror · Horror

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

OMORI
Shared: Indie · Story Rich · Psychological Horror

Outlast
Shared: Horror · Gore · Psychological Horror

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

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

MiSide
Shared: Psychological Horror · Story Rich · Horror

Tiny Bunny
Shared: Horror · Story Rich · Psychological Horror

Outlast 2
Shared: Horror · Gore · Psychological Horror

KinitoPET
Shared: Horror · Indie · Psychological Horror

Hello Charlotte EP3: Childhood's End
Shared: Gore · Indie · Story Rich

Firework
Shared: Indie · Horror · Psychological Horror

Little Nightmares
Shared: Horror · Atmospheric · Indie

The Evil Within 2
Shared: Horror · Story Rich · Psychological Horror

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

DISTRAINT: Deluxe Edition
Shared: Indie · Horror · Psychological Horror

Resident Evil 7 Biohazard
Shared: Horror · Gore · Atmospheric

Buddy Simulator 1984
Shared: Indie · Psychological Horror · Horror