Games like Dark Days
Games like Dark Days include Little Nightmares II, Poppy Playtime, Little Nightmares, MiSide, and Little Misfortune. We matched them by the tags players give Dark Days on Steam (Adventure, Horror, LGBTQ+, Psychological Horror, and Thriller): closest matches first, and among equally close ones the better-known games.

Little Nightmares II
Shared: Adventure · Horror · Singleplayer

Poppy Playtime
Shared: Horror · Singleplayer · Psychological Horror

Little Nightmares
Shared: Horror · Adventure · Singleplayer

MiSide
Shared: Psychological Horror · Horror · Singleplayer

Little Misfortune
Shared: Psychological Horror · Adventure · Horror

Fran Bow
Shared: Psychological Horror · Horror · Adventure

Detention
Shared: Horror · Psychological Horror · Adventure

The Medium
Shared: Adventure · Horror · Psychological Horror

The Cat Lady
Shared: Horror · Adventure · Psychological Horror

DreadOut
Shared: Horror · Adventure · Female Protagonist

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

Firework
Shared: Horror · Psychological Horror · Indie

Getting Over It with Bennett Foddy
Shared: Psychological Horror · Horror · Singleplayer

Outlast
Shared: Horror · Psychological Horror · Adventure

Tales of the Black Forest
Shared: Horror · Adventure · Indie

Escape the Backrooms
Shared: Horror · Psychological Horror · Adventure

ParanormalHK
Shared: Horror · Psychological Horror · Adventure

Observation
Shared: Adventure · Horror · Indie

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

Paper Dolls: Original /
Shared: Adventure · Horror · Thriller

Stories Untold
Shared: Adventure · Horror · Psychological Horror

SIGNALIS
Shared: Psychological Horror · LGBTQ+ · Female Protagonist

Alan Wake
Shared: Horror · Adventure · Thriller

Cat in the Box
Shared: Adventure · Horror · Psychological Horror