Games like Mental Hellacious
Games like Mental Hellacious include Getting Over It with Bennett Foddy, Jump King, Marvel’s Spider-Man Remastered, A Difficult Game About Climbing, and STAR WARS Jedi: Survivor™. We matched them by the tags players give Mental Hellacious on Steam (Psychological Horror, Difficult, Precision Platformer, 3D Platformer, and Parkour): closest matches first, and among equally close ones the better-known games.

Getting Over It with Bennett Foddy
Shared: Psychological Horror · Difficult · Physics

Jump King
Shared: Psychological Horror · Difficult · Precision Platformer

Marvel’s Spider-Man Remastered
Shared: Action · Adventure · Open World

A Difficult Game About Climbing
Shared: Psychological Horror · Difficult · Precision Platformer

STAR WARS Jedi: Survivor™
Shared: Action · Adventure · Action-Adventure

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

Assassin's Creed 2
Shared: Action · Parkour · Adventure

Marvel’s Spider-Man: Miles Morales
Shared: Action · Parkour · Adventure

Assassin's Creed® Origins
Shared: Action-Adventure · Action · Parkour

Sonic Frontiers
Shared: 3D Platformer · Action · Adventure

Clustertruck
Shared: Parkour · 3D Platformer · Action

Get To Work
Shared: Difficult · Precision Platformer · 3D Platformer

Pogostuck: Rage With Your Friends
Shared: Psychological Horror · Difficult · Precision Platformer

Celeste
Shared: Difficult · Precision Platformer · Indie

Assassin's Creed® Revelations
Shared: Parkour · Action · Adventure

Assassin’s Creed® Brotherhood
Shared: Action · Parkour · Adventure

Peaks of Yore
Shared: Difficult · Psychological Horror · Physics

Cairn
Shared: Difficult · Adventure · Parkour

Geometry Dash
Shared: Difficult · Precision Platformer · Psychological Horror

Assassin’s Creed® IV Black Flag™
Shared: Parkour · Action · Adventure

Middle-earth™: Shadow of Mordor™
Shared: Action · Adventure · Open World

I wanna be the Creator
Shared: Action · Difficult · Precision Platformer

Monster Hunter: World
Shared: Action · Difficult · Adventure

Prince of Persia: The Forgotten Sands™
Shared: Action · Parkour · Adventure