Games like I'm the Koala
Games like I'm the Koala include Celeste, Super Meat Boy, Geometry Dash, Jump King, and SANABI. We matched them by the tags players give I'm the Koala on Steam (Precision Platformer, 2D Platformer, Perma Death, Difficult, and Platformer): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · Difficult · 2D Platformer

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

Geometry Dash
Shared: Difficult · Precision Platformer · 2D

Jump King
Shared: Precision Platformer · Difficult · Psychological Horror

SANABI
Shared: 2D Platformer · Action · 2D

Spelunky 2
Shared: 2D Platformer · Platformer · Difficult

VVVVVV
Shared: Precision Platformer · 2D Platformer · Platformer

I wanna be the Creator
Shared: Platformer · Precision Platformer · Action-Adventure

Hollow Knight
Shared: Platformer · Difficult · 2D

Downwell
Shared: Precision Platformer · 2D Platformer · Platformer

Pogostuck: Rage With Your Friends
Shared: Precision Platformer · Difficult · Platformer

A Difficult Game About Climbing
Shared: Difficult · Precision Platformer · Platformer

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

Cuphead
Shared: Difficult · Platformer · 2D

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

Getting Over It with Bennett Foddy
Shared: Difficult · Psychological Horror · Platformer

Sonic Superstars
Shared: 2D Platformer · Platformer · Action-Adventure

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

Katana ZERO
Shared: 2D Platformer · Platformer · Action

Pizza Tower
Shared: 2D Platformer · Platformer · Indie

Rain World
Shared: Difficult · Platformer · 2D Platformer

BEEP
Shared: Platformer · 2D · Adventure

Brawlhalla
Shared: 2D Platformer · Platformer · Casual

Nine Sols
Shared: Difficult · Platformer · 2D