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

Celeste
Shared: Precision Platformer · Difficult · Indie

Geometry Dash
Shared: Difficult · 2D · Precision Platformer

Super Meat Boy
Shared: Precision Platformer · Indie · Difficult

Hollow Knight
Shared: Difficult · 2D · Indie

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

Pizza Tower
Shared: Indie · 2D Platformer · Funny

Jump King
Shared: Precision Platformer · Indie · Difficult

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

VVVVVV
Shared: Precision Platformer · Indie · Difficult

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

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

SANABI
Shared: 2D · Indie · Singleplayer

Cuphead
Shared: Difficult · 2D · Indie

Will You Snail?
Shared: Precision Platformer · Difficult · Funny

Rain World
Shared: Difficult · Indie · 2D

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

Bread & Fred
Shared: Precision Platformer · Cute · Difficult

Electronic Super Joy
Shared: Indie · Difficult · Precision Platformer

Undertale
Shared: Indie · Singleplayer · 2D

Getting Over It with Bennett Foddy
Shared: Difficult · Singleplayer · Indie

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

LIMBO
Shared: Indie · 2D · Platformer

Angry Video Game Nerd Adventures
Shared: Indie · Difficult · Platformer

Baba Is You
Shared: Indie · Difficult · Singleplayer