Games like Elevator 25
Games like Elevator 25 include Escape the Backrooms, MiSide, Phasmophobia, Five Nights at Freddy's: Secret of the Mimic, and Five Nights at Freddy's: Security Breach. We matched them by the tags players give Elevator 25 on Steam (Adventure, Action-Adventure, Hidden Object, 3D, and First-Person): closest matches first, and among equally close ones the better-known games.

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

MiSide
Shared: Psychological Horror · First-Person · Horror

Phasmophobia
Shared: Horror · Psychological Horror · First-Person

Five Nights at Freddy's: Secret of the Mimic
Shared: Adventure · First-Person · Horror

Five Nights at Freddy's: Security Breach
Shared: Horror · First-Person · Adventure

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

Choo-Choo Charles
Shared: Horror · First-Person · Action-Adventure

Outlast
Shared: First-Person · Horror · Psychological Horror

Dollmare
Shared: 3D · Horror · First-Person

SILENT HILL: Townfall
Shared: Adventure · Horror · First-Person

Little Nightmares II
Shared: Adventure · Horror · Psychological Horror

Hello Neighbor
Shared: Horror · First-Person · Action-Adventure

SchoolBoy Runaway
Shared: Adventure · Horror · First-Person

Hello Neighbor 2
Shared: Adventure · Action-Adventure · First-Person

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

Amnesia: Rebirth
Shared: Action-Adventure · First-Person · Adventure

Platform 8
Shared: Adventure · Psychological Horror · Hidden Object

Zort
Shared: Horror · First-Person · Psychological Horror

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

The Cabin Factory
Shared: Horror · Psychological Horror · Adventure

Buckshot Roulette
Shared: First-Person · Horror · 3D

Five Nights at Freddy's
Shared: Horror · Psychological Horror · First-Person

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

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