Games like Evil Mountains
Games like Evil Mountains include The Forest, Sons Of The Forest, Subnautica, Subnautica: Below Zero, and ARK: Survival Evolved. We matched them by the tags players give Evil Mountains on Steam (PvE, First-Person, Horror, Base Building, and Open World): closest matches first, and among equally close ones the better-known games.

The Forest
Shared: Horror · Open World · Survival

Sons Of The Forest
Shared: Open World · Survival · Base Building

Subnautica
Shared: Horror · Survival · Open World

Subnautica: Below Zero
Shared: Horror · Survival · Open World

ARK: Survival Evolved
Shared: Open World · Survival · Crafting

Raft
Shared: Survival · Open World · Crafting

ARK: Survival Ascended
Shared: Open World · Survival · Base Building

The Last Caretaker
Shared: Base Building · Crafting · Survival

Mist Survival
Shared: Survival · Open World · Base Building

Dying Light
Shared: Horror · First-Person · Open World

Rust
Shared: Crafting · Survival · Open World

Green Hell
Shared: Survival · Open World · Crafting

Grounded
Shared: Survival · Base Building · Crafting

The Long Dark
Shared: Open World · Survival · First-Person

Scrap Mechanic
Shared: Open World · Survival · Base Building

Enshrouded
Shared: Open World · Base Building · Survival

ICARUS
Shared: Base Building · Survival · Crafting

Soulmask
Shared: Base Building · PvE · Survival

V Rising
Shared: Base Building · Open World · Survival

Once Human
Shared: Open World · Survival · Base Building

Valheim
Shared: Open World · Survival · Base Building

Satisfactory
Shared: Base Building · Open World · Crafting

DESOLATE
Shared: Horror · First-Person · Open World

The Infected
Shared: Base Building · Open World · Singleplayer