Games like Grouls
Games like Grouls include Summer of '58, Ready or Not, Fears to Fathom - Ironbark Lookout, Resident Evil Requiem, and Mouthwashing. We matched them by the tags players give Grouls on Steam (Horror, Thriller, Psychological Horror, Walking Simulator, and Cinematic): closest matches first, and among equally close ones the better-known games.

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

Ready or Not
Shared: Horror · FPS · Realistic

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

Resident Evil Requiem
Shared: Horror · FPS · Cinematic

Mouthwashing
Shared: Horror · Psychological Horror · Walking Simulator

September 7th
Shared: Horror · Psychological Horror · Walking Simulator

Phasmophobia
Shared: Horror · Psychological Horror · First-Person

Zort
Shared: Horror · Psychological Horror · First-Person

April 24th
Shared: Thriller · Psychological Horror · Walking Simulator

MiSide
Shared: Psychological Horror · Horror · Thriller

Demonologist
Shared: Horror · Psychological Horror · First-Person

Still Wakes the Deep
Shared: Horror · Psychological Horror · Walking Simulator

Layers of Fear (2016)
Shared: Horror · Psychological Horror · Walking Simulator

Escape the Backrooms
Shared: Horror · Psychological Horror · First-Person

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

Buckshot Roulette
Shared: Horror · First-Person · Psychological Horror

ParanormalHK
Shared: Horror · Psychological Horror · Thriller

Hello Neighbor
Shared: Horror · First-Person · 3D Platformer

Outlast
Shared: Horror · Psychological Horror · First-Person

The Exit 8
Shared: Horror · Walking Simulator · Psychological Horror

Father's Day
Shared: Psychological Horror · Thriller · Walking Simulator

Fears to Fathom® - Scratch Creek
Shared: Horror · Psychological Horror · Walking Simulator

Find Yourself
Shared: Horror · Walking Simulator · Cinematic

Visage
Shared: Horror · Psychological Horror · Walking Simulator