Games like Dread Neighbor
Games like Dread Neighbor include What Remains of Edith Finch, Firewatch, MiSide, Phasmophobia, and Poppy Playtime. We matched them by the tags players give Dread Neighbor on Steam (Walking Simulator, Female Protagonist, Psychological Horror, First-Person, and Horror): closest matches first, and among equally close ones the better-known games.

What Remains of Edith Finch
Shared: Walking Simulator · First-Person · Female Protagonist

Firewatch
Shared: Walking Simulator · First-Person · Mystery

MiSide
Shared: Psychological Horror · Horror · First-Person

Phasmophobia
Shared: Horror · Psychological Horror · First-Person

Poppy Playtime
Shared: Horror · First-Person · Singleplayer

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

Mouthwashing
Shared: Psychological Horror · Horror · Walking Simulator

Amnesia: A Machine For Pigs
Shared: Walking Simulator · Horror · First-Person

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

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

Oxenfree
Shared: Female Protagonist · Horror · Mystery

The Park®
Shared: Walking Simulator · Psychological Horror · Horror

Firework
Shared: Horror · Psychological Horror · Indie

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

Fears to Fathom - Woodbury Getaway
Shared: Psychological Horror · First-Person · Horror

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

Outlast
Shared: First-Person · Horror · Psychological Horror

Blair Witch
Shared: Psychological Horror · Horror · First-Person

Psalm 5:9-13
Shared: Psychological Horror · Horror · Walking Simulator

KARMA: The Dark World
Shared: Walking Simulator · Psychological Horror · First-Person

Subliminal
Shared: Psychological Horror · Singleplayer · Thriller

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

Summer of '58
Shared: Walking Simulator · Horror · Psychological Horror

Slender: The Arrival
Shared: Horror · First-Person · Psychological Horror