Games like Zenodeath
Games like Zenodeath include Vampire Survivors, LUFTRAUSERS, BALL x PIT, ZeroRanger, and Exit the Gungeon. We matched them by the tags players give Zenodeath on Steam (Indie, Action, Shoot 'Em Up, Bullet Hell, and Arcade): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Bullet Hell · Indie · Pixel Graphics

LUFTRAUSERS
Shared: Indie · Action · Bullet Hell

BALL x PIT
Shared: Action · Bullet Hell · Arcade

ZeroRanger
Shared: Indie · Shoot 'Em Up · Bullet Hell

Exit the Gungeon
Shared: Indie · Action · Arcade

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

Planes, Bullets and Vodka
Shared: Action · Shoot 'Em Up · Bullet Hell

Bit Blaster XL
Shared: Shoot 'Em Up · Bullet Hell · Arcade

Cyberhunt
Shared: Indie · Action · Shoot 'Em Up

DRAINUS
Shared: Action · Indie · Shoot 'Em Up

Jet Lancer
Shared: Indie · Action · Shoot 'Em Up

Megabonk
Shared: Indie · Bullet Hell · Action

Star Saviors
Shared: Shoot 'Em Up · Action · Indie

Timberman
Shared: Indie · Action · Pixel Graphics

Nova Drift
Shared: Shoot 'Em Up · Bullet Hell · Arcade

Star of Providence
Shared: Bullet Hell · Indie · Shoot 'Em Up

Enter the Gungeon
Shared: Bullet Hell · Indie · Pixel Graphics

Revolution Ace
Shared: Action · Indie · Shoot 'Em Up

Halls of Torment
Shared: Bullet Hell · Action · Pixel Graphics

BLUE REVOLVER
Shared: Indie · Shoot 'Em Up · Action

Touhou Fuujinroku ~ Mountain of Faith.
Shared: Indie · Action · Bullet Hell

Savant - Ascent
Shared: Indie · Action · Shoot 'Em Up

Windowkill
Shared: Indie · Action · Bullet Hell

Boneraiser Minions
Shared: Bullet Hell · Indie · Pixel Graphics