Games like Hop Spring Girl
Games like Hop Spring Girl include Celeste, Super Meat Boy, Freedom Planet, VVVVVV, and Gensokyo Night Festival. We matched them by the tags players give Hop Spring Girl on Steam (Precision Platformer, Platformer, Female Protagonist, Cute, and 2D): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · Platformer · Female Protagonist

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

Freedom Planet
Shared: Platformer · Female Protagonist · Action

VVVVVV
Shared: Precision Platformer · Platformer · Pixel Graphics

Gensokyo Night Festival
Shared: Action · Cute · Female Protagonist

Jump King
Shared: Precision Platformer · Platformer · 2D

Downwell
Shared: Precision Platformer · Platformer · Pixel Graphics

Shovel Knight: Treasure Trove
Shared: Platformer · Pixel Graphics · 2D

Gato Roboto
Shared: Action · Platformer · 2D

Geometry Dash
Shared: Precision Platformer · 2D · Platformer

Broforce
Shared: Platformer · Action · 2D

SANABI
Shared: Action · Pixel Graphics · 2D

Wings of Vi
Shared: Precision Platformer · Platformer · Female Protagonist

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

Vampire Survivors
Shared: 2D · Pixel Graphics · Casual

Muse Dash
Shared: Cute · Female Protagonist · Casual

Gravity Circuit
Shared: Platformer · Action · 2D

Lunistice
Shared: Female Protagonist · Platformer · Cute

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

Momodora III
Shared: Platformer · Female Protagonist · Action

Katana ZERO
Shared: Platformer · Action · Pixel Graphics

Bloodstained: Curse of the Moon
Shared: Platformer · Action · 2D

Hollow Knight
Shared: Platformer · 2D · Singleplayer

Record of Lodoss War-Deedlit in Wonder Labyrinth-
Shared: Female Protagonist · Platformer · 2D