Games like Feudal Alloy
Games like Feudal Alloy include Hollow Knight, Dust: An Elysian Tail, Hollow Knight: Silksong, Rogue Legacy 2, and Rogue Legacy. We matched them by the tags players give Feudal Alloy on Steam (Indie, Action, Metroidvania, RPG, and Adventure): closest matches first, and among equally close ones the better-known games.

Hollow Knight
Shared: Metroidvania · Indie · Platformer

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

Hollow Knight: Silksong
Shared: Indie · Metroidvania · Platformer

Rogue Legacy 2
Shared: Metroidvania · Action · Indie

Rogue Legacy
Shared: Indie · Action · Platformer

UnEpic
Shared: Indie · RPG · Metroidvania

Bloodstained: Ritual of the Night
Shared: Metroidvania · Action · RPG

Salt and Sanctuary
Shared: Metroidvania · Action · RPG

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

Nine Sols
Shared: Metroidvania · Action · Indie

Wolcen: Lords of Mayhem
Shared: Action RPG · RPG · Action

Valdis Story: Abyssal City
Shared: Action · Metroidvania · Indie

Skul: The Hero Slayer
Shared: Indie · Action · Metroidvania

Eastern Exorcist
Shared: Action · RPG · Adventure

Black Myth: Wukong
Shared: Action · Action RPG · RPG

Deaths Gambit: Afterlife
Shared: Metroidvania · RPG · Action

The Vagrant
Shared: Action · RPG · Metroidvania

SteamWorld Dig 2
Shared: Indie · Metroidvania · Action

ICEY
Shared: Action · Indie · Adventure

Gato Roboto
Shared: Indie · Action · Metroidvania

Dungeon Munchies
Shared: Indie · Action · Adventure

Monster Boy and the Cursed Kingdom
Shared: Action · Indie · Adventure

Chasm
Shared: Indie · Metroidvania · Action

Blasphemous
Shared: Metroidvania · Indie · Action