Games like Cursed Gem
Games like Cursed Gem include Celeste, SANABI, Super Meat Boy, Jump King, and Katana ZERO. We matched them by the tags players give Cursed Gem on Steam (Platformer, Action, Adventure, Indie, and Difficult): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Difficult · Platformer · Indie

SANABI
Shared: Action · Pixel Graphics · Adventure

Super Meat Boy
Shared: Platformer · Indie · Difficult

Jump King
Shared: Difficult · Indie · Platformer

Katana ZERO
Shared: Action · Platformer · Pixel Graphics

VVVVVV
Shared: Platformer · Pixel Graphics · Indie

Skul: The Hero Slayer
Shared: Action · Indie · Pixel Graphics

Hollow Knight
Shared: Platformer · Difficult · Indie

Downwell
Shared: Platformer · Indie · Pixel Graphics

Shovel Knight: Treasure Trove
Shared: Platformer · Pixel Graphics · Indie

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

Hollow Knight: Silksong
Shared: Indie · Difficult · Platformer

The End Is Nigh
Shared: Platformer · Indie · Difficult

Owlboy
Shared: Adventure · Platformer · Indie

Rain World
Shared: Difficult · Platformer · Indie

Pizza Tower
Shared: Indie · Platformer · 2D Platformer

Out There Somewhere
Shared: Platformer · Indie · Adventure

The Messenger
Shared: Platformer · Pixel Graphics · Action

Broforce
Shared: Action · Platformer · Pixel Graphics

BlazBlue Entropy Effect
Shared: Action · Platformer · Action-Adventure

LIMBO
Shared: Platformer · Indie · Adventure

MO:Astray
Shared: Action · Indie · Adventure

Nine Sols
Shared: Platformer · Difficult · Action

Rusted Moss
Shared: Platformer · Action · Pixel Graphics