Games like Sir Fallen: Supporter Pack
Games like Sir Fallen: Supporter Pack include Celeste, Jump King, Super Meat Boy, SANABI, and Geometry Dash. We matched them by the tags players give Sir Fallen: Supporter Pack on Steam (Psychological Horror, Action, Precision Platformer, Difficult, and 2D Platformer): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · Difficult · 2D Platformer

Jump King
Shared: Psychological Horror · Precision Platformer · Difficult

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

SANABI
Shared: Action · 2D Platformer · Adventure

Geometry Dash
Shared: Difficult · Precision Platformer · Psychological Horror

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

I wanna be the Creator
Shared: Action · Adventure · Difficult

VVVVVV
Shared: Precision Platformer · 2D Platformer · Difficult

Downwell
Shared: Precision Platformer · Action · 2D Platformer

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

Hollow Knight
Shared: Difficult · Platformer · Indie

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

Katana ZERO
Shared: Action · 2D Platformer · Indie

Skul: The Hero Slayer
Shared: Action · Indie · Difficult

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

Hollow Knight: Silksong
Shared: Difficult · Indie · Adventure

Rain World
Shared: Difficult · Indie · Adventure

Spelunky 2
Shared: Difficult · 2D Platformer · Platformer

Changed
Shared: Psychological Horror · Difficult · Adventure

Noita
Shared: Difficult · Indie · Action

Ambidextro
Shared: Action · Precision Platformer · 2D Platformer

Shovel Knight: Treasure Trove
Shared: Action · Adventure · Indie

Blasphemous 2
Shared: Difficult · Adventure · 2D Platformer

Pizza Tower
Shared: 2D Platformer · Indie · Action