Games like Martha
Games like Martha include Outlast, Poppy Playtime, Resident Evil 7 Biohazard, The Forest, and Phasmophobia. We matched them by the tags players give Martha on Steam (Horror, Shoot 'Em Up, Survival Horror, Investigation, and Perma Death): closest matches first, and among equally close ones the better-known games.

Outlast
Shared: Horror · Survival Horror · First-Person

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

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

The Forest
Shared: Horror · Survival · Survival Horror

Phasmophobia
Shared: Horror · Investigation · Psychological Horror

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

Dying Light
Shared: Horror · Survival Horror · Survival

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

Hello Neighbor
Shared: Horror · Survival Horror · First-Person

The Outlast Trials
Shared: Horror · Survival Horror · First-Person

Dead by Daylight
Shared: Horror · Survival Horror · Survival

Outlast 2
Shared: Horror · Survival Horror · First-Person

The Beast Inside
Shared: Horror · Survival Horror · First-Person

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

Resident Evil Requiem
Shared: Horror · Survival Horror · First-Person

Resident Evil 4
Shared: Horror · Survival Horror · Survival

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

Dead Space™ 2
Shared: Horror · Survival Horror · Shooter

Metel - Horror Escape
Shared: Horror · Survival Horror · 3D

Bendy and the Dark Revival
Shared: Horror · Survival Horror · First-Person

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

METRO 2033 Redux
Shared: Horror · Survival Horror · Shooter

Subnautica 2
Shared: Horror · Survival · Survival Horror

Choo-Choo Charles
Shared: Horror · Survival Horror · Shooter