Games like Color Souls
Games like Color Souls include Hollow Knight, Momodora: Reverie Under The Moonlight, Hollow Knight: Silksong, Celeste, and Blasphemous 2. We matched them by the tags players give Color Souls on Steam (Side Scroller, 2D Platformer, Souls-like, Difficult, and Platformer): closest matches first, and among equally close ones the better-known games.

Hollow Knight
Shared: Souls-like · Platformer · Difficult

Momodora: Reverie Under The Moonlight
Shared: 2D Platformer · Side Scroller · Souls-like

Hollow Knight: Silksong
Shared: Difficult · Souls-like · Platformer

Celeste
Shared: Difficult · 2D Platformer · Platformer

Blasphemous 2
Shared: Difficult · Souls-like · 2D Platformer

Geometry Dash
Shared: Difficult · 2D · Platformer

Super Meat Boy
Shared: Difficult · 2D Platformer · Platformer

Anomaly Agent
Shared: Side Scroller · 2D Platformer · Souls-like

Nine Sols
Shared: Souls-like · Difficult · Platformer

Rain World
Shared: Difficult · Platformer · 2D Platformer

Salt and Sanctuary
Shared: Souls-like · Difficult · 2D

Blasphemous
Shared: Souls-like · Difficult · 2D

SANABI
Shared: 2D Platformer · 2D · Platformer

Cuphead
Shared: Difficult · Platformer · 2D

Spelunky 2
Shared: 2D Platformer · Platformer · Difficult

Afterimage
Shared: 2D Platformer · Side Scroller · Souls-like

Thomas Was Alone
Shared: Side Scroller · 2D Platformer · Platformer

Rogue Legacy 2
Shared: Platformer · Arcade · Difficult

Pizza Tower
Shared: 2D Platformer · Platformer · Indie

Shovel Knight: Treasure Trove
Shared: Platformer · Difficult · Side Scroller

Laika: Aged Through Blood
Shared: 2D Platformer · Arcade · Platformer

Katana ZERO
Shared: 2D Platformer · Platformer · 2D

LIMBO
Shared: Platformer · 2D · Side Scroller

Downwell
Shared: 2D Platformer · Platformer · Arcade