Games like Lex Mortis
Games like Lex Mortis include The Forest, We Happy Few, Grand Theft Auto V Legacy, Firewatch, and The Beast Inside. We matched them by the tags players give Lex Mortis on Steam (Action, Adventure, Indie, Horror, and Open World): closest matches first, and among equally close ones the better-known games.

The Forest
Shared: Horror · Adventure · Open World

We Happy Few
Shared: Adventure · Action · Open World

Grand Theft Auto V Legacy
Shared: Action · Open World · Adventure

Firewatch
Shared: Adventure · Walking Simulator · Indie

The Beast Inside
Shared: Adventure · Horror · Action

Atomic Heart
Shared: Adventure · Action · Open World

Red Dead Redemption 2
Shared: Open World · Adventure · Action

Batman™: Arkham Knight
Shared: Action · Open World · Adventure

Valley
Shared: Adventure · Action · Indie

DEATH STRANDING DIRECTOR'S CUT
Shared: Open World · Walking Simulator · Adventure

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

Notes of Soul
Shared: Action · Horror · Adventure

The Hat Man: Shadow Ward
Shared: Indie · Horror · Adventure

Sons Of The Forest
Shared: Open World · Horror · Adventure

Far Cry 3
Shared: Action · Adventure · Open World

Rise of the Tomb Raider™
Shared: Action · Adventure · Open World

Dying Light
Shared: Horror · Open World · Action

Grand Theft Auto IV: The Complete Edition
Shared: Action · Open World · Adventure

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

Wobbly Life
Shared: Adventure · Open World · Action

Crimson Desert Enhanced
Shared: Action · Open World · Adventure

Darkwood
Shared: Adventure · Horror · Action

VERGE:Lost chapter
Shared: Indie · Adventure · Horror

Dinosaur Hunt
Shared: Action · Indie · Adventure