Games like Some Jello and a Hard Place
Games like Some Jello and a Hard Place include Celeste, Super Meat Boy, Geometry Dash, Hollow Knight, and Hollow Knight: Silksong. We matched them by the tags players give Some Jello and a Hard Place on Steam (Singleplayer, Difficult, Linear, 2D, and Platformer): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Difficult · Precision Platformer · Singleplayer

Super Meat Boy
Shared: Difficult · Platformer · Singleplayer

Geometry Dash
Shared: Difficult · 2D · Singleplayer

Hollow Knight
Shared: Difficult · Platformer · Singleplayer

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

Pizza Tower
Shared: 2D Platformer · Singleplayer · Indie

Rain World
Shared: Difficult · Platformer · Indie

SANABI
Shared: Singleplayer · 2D Platformer · 2D

VVVVVV
Shared: Platformer · Difficult · Precision Platformer

Jump King
Shared: Difficult · Indie · Precision Platformer

Cuphead
Shared: Difficult · Platformer · 2D

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

The Binding of Isaac: Rebirth
Shared: Difficult · Indie · Singleplayer

The End Is Nigh
Shared: Difficult · Platformer · Singleplayer

Downwell
Shared: Precision Platformer · Platformer · Indie

LIMBO
Shared: Platformer · Indie · Singleplayer

Baba Is You
Shared: Difficult · Singleplayer · Indie

Thomas Was Alone
Shared: Platformer · 2D Platformer · 2D

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

Skul: The Hero Slayer
Shared: Indie · Singleplayer · 2D

MIO: Memories in Orbit
Shared: Singleplayer · Platformer · Difficult

Braid
Shared: 2D Platformer · Singleplayer · Platformer

Super Meat Boy Forever
Shared: Difficult · Singleplayer · Indie

Shovel Knight: Treasure Trove
Shared: Platformer · 2D · Difficult