Games like DuckLaserDuck
Games like DuckLaserDuck include Vampire Survivors, BALL x PIT, Megabonk, Nova Drift, and 20 Minutes Till Dawn. We matched them by the tags players give DuckLaserDuck on Steam (Action Roguelike, Bullet Hell, Shoot 'Em Up, Top-Down Shooter, and Roguelite): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

BALL x PIT
Shared: Bullet Hell · Roguelite · Action Roguelike

Megabonk
Shared: Action Roguelike · Bullet Hell · Roguelite

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

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

Nuclear Throne
Shared: Action Roguelike · Bullet Hell · Roguelike

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

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

Slime 3K: Rise Against Despot
Shared: Action Roguelike · Bullet Hell · Roguelite

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

Star of Providence
Shared: Bullet Hell · Action Roguelike · Roguelite

Brotato
Shared: Bullet Hell · Action Roguelike · Roguelike

I Am Legion: Stand Survivors
Shared: Action Roguelike · Bullet Hell · Shoot 'Em Up

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

Rocket Rats
Shared: Action Roguelike · Bullet Hell · Roguelite

Apocalypse Party
Shared: Action Roguelike · Bullet Hell · Top-Down Shooter

Voidigo
Shared: Action Roguelike · Bullet Hell · Shoot 'Em Up

SNKRX
Shared: Action Roguelike · Roguelite · Top-Down Shooter

Risk of Rain 2
Shared: Action Roguelike · Roguelite · Roguelike

Tower of Babel: Survivors of Chaos
Shared: Action Roguelike · Bullet Hell · Roguelite

Tiny Rogues
Shared: Action Roguelike · Bullet Hell · Top-Down Shooter

SYNTHETIK: Legion Rising
Shared: Top-Down Shooter · Action Roguelike · Roguelite

Hades
Shared: Action Roguelike · Roguelite · Roguelike

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