Games like Access Key
Games like Access Key include The Mortuary Assistant, Dollmare, Five Nights at Freddy's: Security Breach, Ghostwire: Tokyo, and Phasmophobia. We matched them by the tags players give Access Key on Steam (Simulation, Horror, Surreal, Supernatural, and First-Person): closest matches first, and among equally close ones the better-known games.

The Mortuary Assistant
Shared: Horror · Supernatural · Simulation

Dollmare
Shared: Simulation · Horror · First-Person

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

Ghostwire: Tokyo
Shared: Supernatural · Horror · Singleplayer

Phasmophobia
Shared: Horror · Supernatural · First-Person

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

Poppy Playtime
Shared: Horror · Singleplayer · First-Person

No, I'm not a Human
Shared: Horror · Singleplayer · First-Person

MiSide
Shared: Horror · First-Person · Singleplayer

Contraband Police
Shared: Simulation · First-Person · Singleplayer

Superliminal
Shared: Surreal · First-Person · Thriller

The Scourge Tai ng
Shared: Horror · Supernatural · Singleplayer

Buckshot Roulette
Shared: Horror · First-Person · Singleplayer

Resident Evil 7 Biohazard
Shared: Horror · First-Person · Singleplayer

Resident Evil Village
Shared: Horror · First-Person · Singleplayer

Subliminal
Shared: Horror · Singleplayer · Thriller

Outlast
Shared: Horror · First-Person · Singleplayer

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

The Forest
Shared: Horror · First-Person · Simulation

The Bridge Curse Road to Salvation
Shared: Horror · First-Person · Supernatural

Haunted Room : 205
Shared: Simulation · Horror · First-Person

The Baby In Yellow
Shared: Horror · Singleplayer · Surreal

Locked Up
Shared: Horror · Simulation · First-Person

That's not my Neighbor
Shared: Horror · Simulation · Multiple Endings