Games like Hollow Floor
Games like Hollow Floor include Celeste, Hollow Knight, Rain World, Hollow Knight: Silksong, and Ori and the Will of the Wisps. We matched them by the tags players give Hollow Floor on Steam (Metroidvania, Precision Platformer, Adventure, Cute, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · Pixel Graphics · Indie

Hollow Knight
Shared: Metroidvania · Platformer · Indie

Rain World
Shared: Pixel Graphics · Indie · Exploration

Hollow Knight: Silksong
Shared: Metroidvania · Indie · Adventure

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

VVVVVV
Shared: Precision Platformer · Pixel Graphics · 2D Platformer

ANIMAL WELL
Shared: Metroidvania · Pixel Graphics · Exploration

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

Haiku, the Robot
Shared: Metroidvania · Adventure · Pixel Graphics

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

Gato Roboto
Shared: Metroidvania · Adventure · Pixel Graphics

SANABI
Shared: Pixel Graphics · Adventure · 2D Platformer

Webbed
Shared: Cute · Pixel Graphics · 2D Platformer

The Messenger
Shared: Metroidvania · Retro · Pixel Graphics

Axiom Verge
Shared: Metroidvania · Pixel Graphics · Indie

Dead Cells
Shared: Metroidvania · Adventure · Pixel Graphics

Owlboy
Shared: Adventure · Metroidvania · Pixel Graphics

MIO: Memories in Orbit
Shared: Metroidvania · Exploration · Platformer

Prince of Persia The Lost Crown
Shared: Metroidvania · Adventure · Precision Platformer

OneShot
Shared: Pixel Graphics · Cute · Indie

Jump King
Shared: Precision Platformer · Adventure · Pixel Graphics

Lone Fungus
Shared: Adventure · Pixel Graphics · Precision Platformer

Slime Rancher
Shared: Cute · Adventure · Exploration

Reventure
Shared: Adventure · Pixel Graphics · Indie