Games like Dark Swords Firelink
Games like Dark Swords Firelink include Dead Cells, Hollow Knight, Blasphemous, Hollow Knight: Silksong, and Bloodstained: Ritual of the Night. We matched them by the tags players give Dark Swords Firelink on Steam (Metroidvania, Platformer, Female Protagonist, 2D, and Nonlinear): closest matches first, and among equally close ones the better-known games.

Dead Cells
Shared: Metroidvania · 2D · Pixel Graphics

Hollow Knight
Shared: Metroidvania · Platformer · 2D

Blasphemous
Shared: Metroidvania · Pixel Graphics · 2D

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

Bloodstained: Ritual of the Night
Shared: Metroidvania · Female Protagonist · Platformer

ENDER MAGNOLIA: Bloom in the Mist
Shared: Metroidvania · Female Protagonist · 2D

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

Bloodstained: Curse of the Moon
Shared: Platformer · Metroidvania · Pixel Graphics

Iconoclasts
Shared: Metroidvania · Female Protagonist · Pixel Graphics

ENDER LILIES: Quietus of the Knights
Shared: Metroidvania · Female Protagonist · Dark Fantasy

Nine Sols
Shared: Metroidvania · Platformer · 2D

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

Record of Lodoss War-Deedlit in Wonder Labyrinth-
Shared: Metroidvania · Female Protagonist · Platformer

Castlevania: Belmont's Curse
Shared: Metroidvania · Female Protagonist · Platformer

ANIMAL WELL
Shared: Metroidvania · Platformer · Pixel Graphics

Shantae and the Pirate's Curse
Shared: Metroidvania · Platformer · Female Protagonist

The Vagrant
Shared: Female Protagonist · Metroidvania · 2D

Celeste
Shared: Platformer · Pixel Graphics · Female Protagonist

Phoenotopia: Awakening
Shared: Platformer · Metroidvania · 2D

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

Shantae: Risky's Revenge - Director's Cut
Shared: Platformer · Metroidvania · Female Protagonist

Deaths Gambit: Afterlife
Shared: Metroidvania · Pixel Graphics · 2D

Gato Roboto
Shared: Metroidvania · 2D · Pixel Graphics

Momodora: Reverie Under The Moonlight
Shared: Metroidvania · Female Protagonist · Pixel Graphics