Games like Cattopia
Games like Cattopia include Geometry Dash, Celeste, Super Meat Boy, Hollow Knight, and VVVVVV. We matched them by the tags players give Cattopia on Steam (Precision Platformer, Difficult, Multiple Endings, Physics, and 2D Platformer): closest matches first, and among equally close ones the better-known games.

Geometry Dash
Shared: Difficult · Level Editor · Precision Platformer

Celeste
Shared: Precision Platformer · Difficult · 2D Platformer

Super Meat Boy
Shared: Precision Platformer · Difficult · Platformer

Hollow Knight
Shared: Difficult · Platformer · 2D

VVVVVV
Shared: Precision Platformer · Difficult · 2D Platformer

Webbed
Shared: 2D Platformer · Physics · Cute

Jump King
Shared: Difficult · Precision Platformer · Platformer

Downwell
Shared: Precision Platformer · Difficult · 2D Platformer

Rain World
Shared: Difficult · Platformer · 2D

Noita
Shared: Difficult · Physics · 2D

SANABI
Shared: 2D Platformer · Difficult · Action

Hollow Knight: Silksong
Shared: Difficult · 2D · Platformer

A Dance of Fire and Ice
Shared: Difficult · Level Editor · 2D

I wanna be the Creator
Shared: Level Editor · Difficult · Precision Platformer

Katana ZERO
Shared: 2D Platformer · Platformer · Action

Bread & Fred
Shared: Difficult · Precision Platformer · 2D Platformer

The End Is Nigh
Shared: Precision Platformer · Difficult · Platformer

N++ (NPLUSPLUS)
Shared: Precision Platformer · Difficult · 2D Platformer

Super Meat Boy Forever
Shared: Difficult · Precision Platformer · Platformer

Pizza Tower
Shared: 2D Platformer · Platformer · Indie

Ambidextro
Shared: Precision Platformer · 2D Platformer · Platformer

Alex Kidd in Miracle World DX
Shared: Precision Platformer · Difficult · 2D Platformer

Cuphead
Shared: Difficult · Platformer · 2D

Spelunky 2
Shared: Difficult · 2D Platformer · Platformer