Games like In Dungeon
Games like In Dungeon include Hollow Knight, Hollow Knight: Silksong, Shovel Knight: Treasure Trove, Geometry Dash, and Celeste. We matched them by the tags players give In Dungeon on Steam (Indie, Adventure, Casual, 2D, and Difficult): closest matches first, and among equally close ones the better-known games.

Hollow Knight
Shared: Indie · Difficult · Platformer

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

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

Geometry Dash
Shared: Difficult · 2D · Great Soundtrack

Celeste
Shared: Indie · Difficult · Platformer

Cuphead
Shared: Difficult · Indie · 2D

SANABI
Shared: Adventure · Indie · Action

BEEP
Shared: Indie · Adventure · 2D

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

Super Meat Boy
Shared: Indie · Difficult · Platformer

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

Sonic Mania
Shared: 2D · Platformer · Great Soundtrack

Jump King
Shared: Indie · Difficult · Adventure

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

Minimalism
Shared: Indie · Casual · Adventure

Out There Somewhere
Shared: Indie · Adventure · Platformer

Ori and the Will of the Wisps
Shared: Adventure · Platformer · Singleplayer

LIMBO
Shared: Indie · Adventure · 2D

Super Fancy Pants Adventure
Shared: Adventure · Indie · Casual

GRIS
Shared: Indie · Adventure · Great Soundtrack

Nihilumbra
Shared: Indie · Adventure · Casual

Rogue Legacy 2
Shared: Indie · Adventure · Platformer

Zombotron
Shared: Adventure · Indie · 2D

Axiom Verge
Shared: Indie · 2D · Platformer