Games like HEPH
Games like HEPH include The Forest, Daymare: 1998, Resident Evil 4, Dead by Daylight, and Resident Evil 4 (2005). We matched them by the tags players give HEPH on Steam (Indie, Action, Adventure, Survival Horror, and Survival): closest matches first, and among equally close ones the better-known games.

The Forest
Shared: Survival · Adventure · Survival Horror

Daymare: 1998
Shared: Action · Survival Horror · Indie

Resident Evil 4
Shared: Action · Survival Horror · Survival

Dead by Daylight
Shared: Survival Horror · Gore · Survival

Resident Evil 4 (2005)
Shared: Action · Survival Horror · Adventure

Outlast
Shared: Survival Horror · Gore · Survival

Resident Evil 2
Shared: Survival Horror · Action · Third Person

Rise of the Tomb Raider™
Shared: Action · Adventure · Third Person

The Beast Inside
Shared: Adventure · Survival Horror · Action

Dying Light
Shared: Survival Horror · Survival · Action

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

The Walking Dead: Saints & Sinners
Shared: Action · Adventure · Survival Horror

The Texas Chain Saw Massacre
Shared: Survival Horror · Gore · Action

Resident Evil Revelations 2
Shared: Action · Survival Horror · Adventure

DreadOut
Shared: Indie · Adventure · Survival Horror

DEAD RISING®
Shared: Action · Adventure · Third Person

Resident Evil 0
Shared: Adventure · Survival Horror · Action

We Happy Few
Shared: Adventure · Action · Survival

Sons Of The Forest
Shared: Survival · Survival Horror · Adventure

The Evil Within 2
Shared: Survival Horror · Action · Adventure

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

Last Oasis
Shared: Action · Survival · Adventure

Don't Starve Together
Shared: Survival · Adventure · Indie

Green Hell
Shared: Survival · Action · Adventure