Games like Edgar's Poetical Nightmare
Games like Edgar's Poetical Nightmare include Celeste, Blasphemous 2, Hollow Knight, SANABI, and Momodora: Reverie Under The Moonlight. We matched them by the tags players give Edgar's Poetical Nightmare on Steam (Metroidvania, Precision Platformer, 2D Platformer, Side Scroller, and Hack and Slash): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · 2D Platformer · Platformer

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

Hollow Knight
Shared: Metroidvania · Platformer · 2D

SANABI
Shared: 2D Platformer · Story Rich · Action

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

Dead Cells
Shared: Metroidvania · Hack and Slash · 2D

Katana ZERO
Shared: 2D Platformer · Platformer · Hack and Slash

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

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

Skul: The Hero Slayer
Shared: Metroidvania · 2D · Action

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

Owlboy
Shared: Metroidvania · Platformer · 2D

Prince of Persia The Lost Crown
Shared: Metroidvania · 2D Platformer · Side Scroller

Leap Year
Shared: Precision Platformer · 2D Platformer · Metroidvania

Afterimage
Shared: Metroidvania · 2D Platformer · Side Scroller

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

Nine Sols
Shared: Metroidvania · Platformer · 2D

Blasphemous
Shared: Metroidvania · 2D · Pixel Graphics

ANIMAL WELL
Shared: Metroidvania · Puzzle Platformer · Platformer

Ori and the Will of the Wisps
Shared: Metroidvania · Platformer · Action

Anomaly Agent
Shared: 2D Platformer · Side Scroller · Hack and Slash

Öoo
Shared: Metroidvania · 2D Platformer · Puzzle Platformer

Rusted Moss
Shared: Metroidvania · Platformer · 2D Platformer

Iconoclasts
Shared: Metroidvania · Platformer · Puzzle Platformer