Games like The Pale Piper
Games like The Pale Piper include Hollow Knight, Celeste, Hollow Knight: Silksong, Rain World, and SANABI. We matched them by the tags players give The Pale Piper on Steam (Precision Platformer, Exploration, Metroidvania, Atmospheric, and Difficult): closest matches first, and among equally close ones the better-known games.

Hollow Knight
Shared: Metroidvania · Difficult · Exploration

Celeste
Shared: Precision Platformer · Difficult · Pixel Graphics

Hollow Knight: Silksong
Shared: Metroidvania · Difficult · Indie

Rain World
Shared: Exploration · Atmospheric · Difficult

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

Ori and the Will of the Wisps
Shared: Metroidvania · Atmospheric · Exploration

ANIMAL WELL
Shared: Exploration · Metroidvania · Pixel Graphics

Super Meat Boy
Shared: Precision Platformer · Difficult · Indie

Momodora: Reverie Under The Moonlight
Shared: Metroidvania · Exploration · Pixel Graphics

VVVVVV
Shared: Precision Platformer · Pixel Graphics · Indie

Nine Sols
Shared: Metroidvania · Difficult · Story Rich

MIO: Memories in Orbit
Shared: Exploration · Metroidvania · Atmospheric

Prince of Persia The Lost Crown
Shared: Exploration · Metroidvania · Precision Platformer

Jump King
Shared: Precision Platformer · Difficult · Indie

Hyper Light Drifter
Shared: Atmospheric · Pixel Graphics · Difficult

Owlboy
Shared: Metroidvania · Pixel Graphics · Indie

Axiom Verge
Shared: Metroidvania · Indie · Pixel Graphics

INMOST
Shared: Exploration · Indie · Pixel Graphics

Laika: Aged Through Blood
Shared: Atmospheric · Metroidvania · Story Rich

Haiku, the Robot
Shared: Metroidvania · Exploration · Atmospheric

Skul: The Hero Slayer
Shared: Indie · Pixel Graphics · Metroidvania

Leap Year
Shared: Precision Platformer · Exploration · Metroidvania

Blasphemous 2
Shared: Difficult · Metroidvania · Pixel Graphics

OneShot
Shared: Story Rich · Atmospheric · Indie