Games like One Final Chaos
Games like One Final Chaos include Skul: The Hero Slayer, Defy Gravity Extended, Dust: An Elysian Tail, Katana ZERO, and Broforce. We matched them by the tags players give One Final Chaos on Steam (Action, Indie, Runner, Platformer, and Space): closest matches first, and among equally close ones the better-known games.

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

Defy Gravity Extended
Shared: Indie · Platformer · Action

Dust: An Elysian Tail
Shared: Action · Indie · Platformer

Katana ZERO
Shared: Action · Platformer · Indie

Broforce
Shared: Action · Platformer · Indie

Super Meat Boy Forever
Shared: Indie · Action · Platformer

Rogue Legacy
Shared: Indie · Platformer · Action

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

My Friend Pedro
Shared: Action · Indie · Platformer

Hollow Knight
Shared: Platformer · Indie · Action

Deadlight
Shared: Action · Indie · Platformer

ALTF4
Shared: Runner · Action · Platformer

Rogue Legacy 2
Shared: Action · Platformer · Indie

Vector
Shared: Action · Indie · Platformer

Awesomenauts
Shared: Action · Platformer · Indie

Deliver Us The Moon
Shared: Indie · Action · Space

Mark of the Ninja
Shared: Indie · Platformer · Action

Seen
Shared: Indie · Action · Platformer

Out There Somewhere
Shared: Indie · Platformer · Action

Trailmakers
Shared: Action · Space · Indie

Shovel Knight: Treasure Trove
Shared: Platformer · Indie · Action

EVERSPACE™
Shared: Action · Indie · Space

Hextech Mayhem: A League of Legends Story™
Shared: Runner · Action · Indie

Gravity Circuit
Shared: Action · Indie · Platformer