Games like Last Floor
Games like Last Floor include Outlast, Outlast 2, Poppy Playtime, Resident Evil 7 Biohazard, and Resident Evil Village. We matched them by the tags players give Last Floor on Steam (Indie, Action, Adventure, Horror, and Psychological Horror): closest matches first, and among equally close ones the better-known games.

Outlast
Shared: Horror · Survival Horror · Psychological Horror

Outlast 2
Shared: Horror · Psychological Horror · Survival Horror

Poppy Playtime
Shared: Horror · Survival Horror · Singleplayer

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

Resident Evil Village
Shared: Horror · Action · Survival Horror

SOMA
Shared: Horror · Psychological Horror · Atmospheric

The Beast Inside
Shared: Adventure · Horror · Action

Amnesia: The Dark Descent
Shared: Horror · Psychological Horror · Survival Horror

The Forest
Shared: Horror · Adventure · Action

Darkwood
Shared: Horror · Adventure · Action

Slender: The Arrival
Shared: Indie · Horror · Survival Horror

Five Nights at Freddy's
Shared: Horror · Indie · Survival Horror

Bendy and the Dark Revival
Shared: Horror · Action · Indie

Little Nightmares
Shared: Horror · Adventure · Atmospheric

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

We Happy Few
Shared: Adventure · Action · Indie

The Outlast Trials
Shared: Horror · Psychological Horror · Survival Horror

Escape the Backrooms
Shared: Horror · Psychological Horror · Survival Horror

Ultimate Custom Night
Shared: Horror · Survival Horror · Indie

Spooky's Jump Scare Mansion: HD Renovation
Shared: Indie · Horror · Adventure

Five Nights at Freddy's 2
Shared: Horror · Survival Horror · Indie

Penumbra Overture
Shared: Adventure · Horror · Indie

Bendy and the Ink Machine
Shared: Horror · Indie · First-Person

Visage
Shared: Horror · Psychological Horror · Survival Horror