Games like Darkzan Arena Maadness
Games like Darkzan Arena Maadness include Vampire Survivors, Death Must Die, Hades, Halls of Torment, and 20 Minutes Till Dawn. We matched them by the tags players give Darkzan Arena Maadness on Steam (Action Roguelike, Bullet Hell, Shoot 'Em Up, Hack and Slash, and Souls-like): 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 · RPG

Hades
Shared: Action Roguelike · Hack and Slash · Roguelite

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

20 Minutes Till Dawn
Shared: Action Roguelike · Bullet Hell · Shoot 'Em Up

Soulstone Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

Megabonk
Shared: Action Roguelike · Bullet Hell · Roguelite

BALL x PIT
Shared: Bullet Hell · Action Roguelike · Shoot 'Em Up

Hades II
Shared: Action Roguelike · Hack and Slash · Roguelite

Nova Drift
Shared: Bullet Hell · Shoot 'Em Up · Action Roguelike

Brotato
Shared: Bullet Hell · Action Roguelike · Roguelite

Hero Siege
Shared: Action Roguelike · Hack and Slash · RPG

Dead Cells
Shared: Action Roguelike · Souls-like · Hack and Slash

Slime 3K: Rise Against Despot
Shared: Action Roguelike · Bullet Hell · Shoot 'Em Up

Tower of Babel: Survivors of Chaos
Shared: Action Roguelike · Bullet Hell · Hack and Slash

Boneraiser Minions
Shared: Action Roguelike · Bullet Hell · Roguelite

Lost Castle
Shared: Action Roguelike · Hack and Slash · Roguelite

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

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

Beautiful Mystic Survivors
Shared: Action Roguelike · Bullet Hell · Shoot 'Em Up

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

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

Magicraft
Shared: Action Roguelike · Bullet Hell · Roguelite

VOIN
Shared: Action Roguelike · Hack and Slash · Souls-like