Games like Zombolion
Games like Zombolion include Enter the Gungeon, Hotline Miami, Hotline Miami 2: Wrong Number, Nuclear Throne, and Vampire Survivors. We matched them by the tags players give Zombolion on Steam (Bullet Hell, Pixel Graphics, Difficult, Indie, and 2D): closest matches first, and among equally close ones the better-known games.

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

Hotline Miami
Shared: Pixel Graphics · Indie · Action

Hotline Miami 2: Wrong Number
Shared: Pixel Graphics · Difficult · Action

Nuclear Throne
Shared: Pixel Graphics · Bullet Hell · Indie

Vampire Survivors
Shared: Bullet Hell · Pixel Graphics · 2D

UFO 50
Shared: Pixel Graphics · Indie · 2D

LUFTRAUSERS
Shared: Bullet Hell · Indie · Pixel Graphics

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

The Escapists
Shared: Pixel Graphics · 2D · Indie

Realm of the Mad God Exalt
Shared: Pixel Graphics · Bullet Hell · Difficult

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

Star of Providence
Shared: Bullet Hell · Pixel Graphics · Indie

Broforce
Shared: Pixel Graphics · Action · 2D

Celeste
Shared: Pixel Graphics · Difficult · Indie

Cuphead
Shared: Difficult · 2D · Indie

Shovel Knight: Treasure Trove
Shared: Pixel Graphics · Indie · 2D

Bit Blaster XL
Shared: Bullet Hell · Difficult · 2D

SANABI
Shared: Pixel Graphics · Action · 2D

Titan Souls
Shared: Pixel Graphics · Difficult · Indie

UBERMOSH Vol.5
Shared: Indie · Pixel Graphics · Bullet Hell

Planes, Bullets and Vodka
Shared: Bullet Hell · Action · Retro

Super Meat Boy
Shared: Difficult · Indie · Pixel Graphics

BALL x PIT
Shared: Bullet Hell · Action · Pixel Graphics

The Binding of Isaac: Rebirth
Shared: Indie · Difficult · Pixel Graphics