Games like GunBang
Games like GunBang include Vampire Survivors, Death Must Die, BALL x PIT, Deep Rock Galactic: Survivor, and 20 Minutes Till Dawn. We matched them by the tags players give GunBang on Steam (Action, Casual, Action Roguelike, Arena Shooter, and Boomer Shooter): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

Death Must Die
Shared: Action Roguelike · Bullet Hell · Action

BALL x PIT
Shared: Action · Action Roguelike · Roguelite

Deep Rock Galactic: Survivor
Shared: Action Roguelike · Bullet Hell · Roguelite

20 Minutes Till Dawn
Shared: Action Roguelike · Bullet Hell · Roguelite

Megabonk
Shared: Action Roguelike · Action · Roguelite

Halls of Torment
Shared: Action Roguelike · Bullet Hell · Roguelite

Nuclear Throne
Shared: Action Roguelike · Action · Bullet Hell

Skul: The Hero Slayer
Shared: Action · Action Roguelike · Roguelite

Rocket Rats
Shared: Action Roguelike · Casual · Bullet Hell

Enter the Gungeon
Shared: Action Roguelike · Bullet Hell · Action

Arms of God
Shared: Action Roguelike · Action · Arena Shooter

FatalZone
Shared: Action Roguelike · Bullet Hell · Action

Boneraiser Minions
Shared: Action Roguelike · Bullet Hell · Roguelite

Noobs Want to Live
Shared: Action · Bullet Hell · Action Roguelike

Asgard's Fall — Viking Survivors
Shared: Action Roguelike · Casual · Bullet Hell

Brotato
Shared: Action Roguelike · Bullet Hell · Arena Shooter

Hades
Shared: Action Roguelike · Action · Roguelite

Nordic Ashes: Survivors of Ragnarok
Shared: Action Roguelike · Bullet Hell · Roguelite

Glyphica: Typing Survival
Shared: Action Roguelike · Arena Shooter · Action

SNKRX
Shared: Action Roguelike · Arena Shooter · Roguelite

SYNTHETIK: Legion Rising
Shared: Action · Action Roguelike · Roguelite

Dead Cells
Shared: Action Roguelike · Roguelite · 2D

Time Wasters
Shared: Action Roguelike · Bullet Hell · Arena Shooter