Games like Panic Floor!!
Games like Panic Floor!! include Celeste, Super Meat Boy, Muse Dash, Momodora: Reverie Under The Moonlight, and SANABI. We matched them by the tags players give Panic Floor!! on Steam (2D Platformer, Female Protagonist, Anime, Cute, and Platformer): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · 2D Platformer · Difficult

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

Muse Dash
Shared: Anime · Cute · Female Protagonist

Momodora: Reverie Under The Moonlight
Shared: 2D Platformer · Female Protagonist · Pixel Graphics

SANABI
Shared: 2D Platformer · Pixel Graphics · Platformer

VVVVVV
Shared: 2D Platformer · Platformer · Precision Platformer

Planet of Lana
Shared: Female Protagonist · 2D Platformer · Platformer

Pizza Tower
Shared: 2D Platformer · Platformer · Pixel Graphics

Eryi's Action
Shared: 2D Platformer · Platformer · Anime

Rabi-Ribi
Shared: Anime · Female Protagonist · Cute

Webbed
Shared: 2D Platformer · Cute · Pixel Graphics

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

Geometry Dash
Shared: Difficult · Precision Platformer · Platformer

Downwell
Shared: Precision Platformer · 2D Platformer · Platformer

Freedom Planet
Shared: Female Protagonist · Platformer · Pixel Graphics

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

Jump King
Shared: Precision Platformer · Difficult · Platformer

Momodora III
Shared: Female Protagonist · Platformer · Cute

SUPER CHICKEN JUMPER
Shared: Difficult · Cute · Anime

Rain World
Shared: Difficult · Platformer · Pixel Graphics

Afterimage
Shared: Female Protagonist · 2D Platformer · Anime

Katana ZERO
Shared: 2D Platformer · Pixel Graphics · Platformer

Bread & Fred
Shared: Cute · 2D Platformer · Pixel Graphics

Gal Guardians: Demon Purge
Shared: 2D Platformer · Platformer · Anime