Games like Project Jump Scare
Games like Project Jump Scare include Five Nights at Freddy's: Security Breach, Lethal Company, Five Nights at Freddy's: Secret of the Mimic, Outlast, and Escape the Backrooms. We matched them by the tags players give Project Jump Scare on Steam (First-Person, Action Roguelike, Survival Horror, Exploration, and Horror): closest matches first, and among equally close ones the better-known games.

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

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

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

Outlast
Shared: First-Person · Survival Horror · Horror

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

PEAK
Shared: First-Person · Exploration · 3D

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

Content Warning
Shared: Action Roguelike · Horror · Exploration

The Forest
Shared: Horror · First-Person · Survival Horror

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

Choo-Choo Charles
Shared: Survival Horror · First-Person · Horror

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

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

Subnautica 2
Shared: Horror · Exploration · First-Person

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

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

SOMA
Shared: Horror · Survival Horror · Exploration

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

Amnesia: The Bunker
Shared: Survival Horror · Horror · First-Person

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

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

Inside the Backrooms
Shared: Survival Horror · Horror · First-Person

Sons Of The Forest
Shared: Survival Horror · Horror · First-Person

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