Games like Timespinner
Games like Timespinner include Momodora: Reverie Under The Moonlight, Touhou Luna Nights, Bloodstained: Ritual of the Night, Hollow Knight: Silksong, and Afterimage. We matched them by the tags players give Timespinner on Steam (Metroidvania, LGBTQ+, Female Protagonist, Side Scroller, and 2D Platformer): closest matches first, and among equally close ones the better-known games.

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

Touhou Luna Nights
Shared: Metroidvania · Side Scroller · Female Protagonist

Bloodstained: Ritual of the Night
Shared: Metroidvania · Female Protagonist · Side Scroller

Hollow Knight: Silksong
Shared: Metroidvania · Female Protagonist · 2D

Afterimage
Shared: Metroidvania · Female Protagonist · 2D Platformer

Hollow Knight
Shared: Metroidvania · Platformer · 2D

Celeste
Shared: Female Protagonist · 2D Platformer · Pixel Graphics

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

Dust: An Elysian Tail
Shared: Metroidvania · Platformer · 2D

The Vagrant
Shared: Female Protagonist · Metroidvania · Side Scroller

Rabi-Ribi
Shared: Metroidvania · Female Protagonist · Exploration

Castlevania: Belmont's Curse
Shared: Metroidvania · Female Protagonist · 2D Platformer

Iconoclasts
Shared: Metroidvania · Female Protagonist · Pixel Graphics

UnEpic
Shared: Metroidvania · Platformer · RPG

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

UNSIGHTED
Shared: Metroidvania · Female Protagonist · LGBTQ+

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

Gestalt: Steam & Cinder
Shared: Metroidvania · Female Protagonist · 2D Platformer

9 Years of Shadows
Shared: Metroidvania · Side Scroller · Platformer

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

ICEY
Shared: Female Protagonist · Side Scroller · Action

Axiom Verge
Shared: Metroidvania · Platformer · Pixel Graphics

Dex
Shared: Female Protagonist · Metroidvania · Side Scroller

Momodora: Moonlit Farewell
Shared: Metroidvania · Side Scroller · Female Protagonist