Games like Zombie Dungeon
Games like Zombie Dungeon include Celeste, Super Meat Boy, Downwell, SANABI, and VVVVVV. We matched them by the tags players give Zombie Dungeon on Steam (Precision Platformer, 2D Platformer, Platformer, Arcade, and Action-Adventure): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · Platformer · 2D Platformer

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

Downwell
Shared: Precision Platformer · Platformer · 2D Platformer

SANABI
Shared: 2D Platformer · Pixel Graphics · Action

VVVVVV
Shared: Precision Platformer · Platformer · 2D Platformer

Webbed
Shared: 2D Platformer · Platformer · 2D

Pizza Tower
Shared: 2D Platformer · Platformer · Indie

Katana ZERO
Shared: Platformer · 2D Platformer · Action

BlazBlue Entropy Effect
Shared: Platformer · 2D · Action-Adventure

Sonic Origins
Shared: 2D Platformer · Platformer · Action

Sonic Superstars
Shared: 2D Platformer · Platformer · Action-Adventure

Jump King
Shared: Precision Platformer · Platformer · 2D

Super Mombo Quest
Shared: Precision Platformer · Arcade · Platformer

Geometry Dash
Shared: Precision Platformer · 2D · Platformer

Broforce
Shared: Platformer · 2D · Action

The Messenger
Shared: Platformer · 2D · 2D Platformer

!AnyWay!
Shared: Precision Platformer · 2D Platformer · Platformer

Mina the Hollower
Shared: Action-Adventure · 2D Platformer · Platformer

Rusted Moss
Shared: Platformer · 2D Platformer · Precision Platformer

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

Rogue Legacy 2
Shared: Arcade · Platformer · Action

Twin Shot Deluxe
Shared: 2D Platformer · Arcade · Platformer

UFO 50
Shared: Arcade · 2D · Pixel Graphics

Ambidextro
Shared: Precision Platformer · 2D Platformer · Platformer