Games like One Man Is Not No Man
Games like One Man Is Not No Man include Ultimate Custom Night, Chivalry: Medieval Warfare, Skul: The Hero Slayer, Jump King, and Hollow Knight: Silksong. We matched them by the tags players give One Man Is Not No Man on Steam (Indie, Action, Medieval, Difficult, and Free to Play): closest matches first, and among equally close ones the better-known games.

Ultimate Custom Night
Shared: Free to Play · Difficult · Indie

Chivalry: Medieval Warfare
Shared: Medieval · Action · Indie

Skul: The Hero Slayer
Shared: Indie · Action · Difficult

Jump King
Shared: Indie · Difficult · Action

Hollow Knight: Silksong
Shared: Indie · Difficult · Action

Hotline Miami
Shared: Action · Indie · Difficult

The Binding of Isaac
Shared: Indie · Difficult · Action

SMITE®
Shared: Action · Free to Play · Indie

Mount & Blade II: Bannerlord
Shared: Medieval · Action · Indie

Hades
Shared: Indie · Action · Difficult

Sifu
Shared: Action · Difficult · Indie

Aimlabs
Shared: Action · Free to Play · Indie

War Thunder
Shared: Action · Free to Play

Hollow Knight
Shared: Difficult · Indie · Action

We Who Are About To Die
Shared: Action · Medieval · Difficult

Super Hexagon
Shared: Indie · Difficult · Action

Century: Age of Ashes
Shared: Action · Free to Play · Indie

Nine Sols
Shared: Difficult · Action · Indie

Devil Daggers
Shared: Indie · Difficult · Action

Exanima
Shared: Medieval · Difficult · Action

SUPERHOT
Shared: Action · Indie · Difficult

Cuphead
Shared: Difficult · Indie · Action

The Binding of Isaac: Rebirth
Shared: Indie · Difficult · Action

Risk of Rain (2013)
Shared: Indie · Action · Difficult