Games like Mute Crimson+
Games like Mute Crimson+ include SANABI, Celeste, Super Meat Boy, The Messenger, and Shovel Knight: Treasure Trove. We matched them by the tags players give Mute Crimson+ on Steam (Side Scroller, 2D Platformer, Difficult, Platformer, and Arcade): closest matches first, and among equally close ones the better-known games.

SANABI
Shared: 2D Platformer · Pixel Graphics · 2D

Celeste
Shared: Difficult · 2D Platformer · Platformer

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

The Messenger
Shared: Platformer · Pixel Graphics · 2D

Shovel Knight: Treasure Trove
Shared: Platformer · Pixel Graphics · Difficult

NINJA GAIDEN: Ragebound
Shared: 2D Platformer · Platformer · Side Scroller

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

Skul: The Hero Slayer
Shared: Pixel Graphics · 2D · Platformer

Rogue Legacy 2
Shared: Arcade · Platformer · Difficult

Geometry Dash
Shared: Difficult · 2D · Platformer

Blasphemous 2
Shared: Difficult · 2D Platformer · Side Scroller

Downwell
Shared: Platformer · 2D Platformer · Pixel Graphics

Pizza Tower
Shared: 2D Platformer · Platformer · Pixel Graphics

Hollow Knight
Shared: Platformer · Difficult · 2D

Broforce
Shared: Platformer · Pixel Graphics · 2D

Momodora: Reverie Under The Moonlight
Shared: 2D Platformer · Side Scroller · Pixel Graphics

Volgarr the Viking
Shared: Difficult · Platformer · 2D

Bloodstained: Curse of the Moon
Shared: Platformer · Side Scroller · Pixel Graphics

VVVVVV
Shared: Platformer · 2D Platformer · Pixel Graphics

Sonic Mania
Shared: Platformer · 2D · Side Scroller

Rain World
Shared: Difficult · Platformer · Pixel Graphics

Touhou Luna Nights
Shared: Side Scroller · Difficult · Platformer

Hollow Knight: Silksong
Shared: Difficult · Platformer · 2D

Cuphead
Shared: Difficult · Platformer · 2D