Games like Shelldom
Games like Shelldom include Celeste, SANABI, Jump King, Shovel Knight: Treasure Trove, and LIMBO. We matched them by the tags players give Shelldom on Steam (RPG, Adventure, Platformer, Precision Platformer, and Side Scroller): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · Platformer · Pixel Graphics

SANABI
Shared: Adventure · Pixel Graphics · Cyberpunk

Jump King
Shared: Precision Platformer · Adventure · Platformer

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

LIMBO
Shared: Platformer · Adventure · 2D

Finding Paradise
Shared: Adventure · RPG · Pixel Graphics

Dust: An Elysian Tail
Shared: Platformer · RPG · Adventure

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

Impostor Factory
Shared: Adventure · RPG · Pixel Graphics

DELTARUNE
Shared: RPG · Pixel Graphics · 2D

To the Moon
Shared: Adventure · Pixel Graphics · RPG

Look Outside
Shared: RPG · Adventure · Pixel Graphics

Eastern Exorcist
Shared: RPG · Adventure · Side Scroller

Dex
Shared: RPG · Cyberpunk · 2D

Dungeon Munchies
Shared: Adventure · RPG · Pixel Graphics

Rogue Legacy
Shared: Platformer · RPG · 2D

DISTRAINT: Deluxe Edition
Shared: Adventure · 2D · Pixel Graphics

Child of Light
Shared: RPG · Platformer · Adventure

UnEpic
Shared: RPG · Platformer · 2D

OMORI
Shared: RPG · Pixel Graphics · 2D

Tales of the Black Forest
Shared: RPG · Adventure · Pixel Graphics

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

Geometry Dash
Shared: 2D · Precision Platformer · Platformer

ICEY
Shared: Adventure · Side Scroller · RPG