Games like Shantae: Half-Genie Hero
Games like Shantae: Half-Genie Hero include Bloodstained: Ritual of the Night, Hollow Knight: Silksong, Hollow Knight, ICEY, and Ori and the Will of the Wisps. We matched them by the tags players give Shantae: Half-Genie Hero on Steam (Female Protagonist, Platformer, Metroidvania, Cute, and Action): closest matches first, and among equally close ones the better-known games.

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

Hollow Knight: Silksong
Shared: Metroidvania · Platformer · Female Protagonist

Hollow Knight
Shared: Platformer · Metroidvania · Singleplayer

ICEY
Shared: Female Protagonist · Action · Side Scroller

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

Rabi-Ribi
Shared: Metroidvania · Female Protagonist · Anime

The Vagrant
Shared: Female Protagonist · Action · Metroidvania

Shantae and the Seven Sirens
Shared: Female Protagonist · Platformer · Metroidvania

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

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

Indivisible
Shared: Female Protagonist · Platformer · Action

Monster Boy and the Cursed Kingdom
Shared: Metroidvania · Platformer · Action

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

Lost Ruins
Shared: Metroidvania · Platformer · Cute

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

Afterimage
Shared: Female Protagonist · Metroidvania · Side Scroller

Touhou Hero of Ice Fairy
Shared: Female Protagonist · Platformer · Cute

Momodora: Moonlit Farewell
Shared: Metroidvania · Female Protagonist · Anime

Momodora: Reverie Under The Moonlight
Shared: Metroidvania · Female Protagonist · Side Scroller

Iconoclasts
Shared: Female Protagonist · Metroidvania · Action

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

Ghost 1.0
Shared: Metroidvania · Female Protagonist · Action

Constance
Shared: Platformer · Metroidvania · Action

Gensokyo Night Festival
Shared: Metroidvania · Action · Female Protagonist