Games like DunJumb
Games like DunJumb include Vampire Survivors, Megabonk, Enter the Gungeon, BALL x PIT, and Dead Cells. We matched them by the tags players give DunJumb on Steam (Bullet Hell, Roguelike, Action Roguelike, Roguelite, and Retro): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Bullet Hell · Action Roguelike · Roguelite

Megabonk
Shared: Roguelike · Action Roguelike · Bullet Hell

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

BALL x PIT
Shared: Bullet Hell · Roguelite · Roguelike

Dead Cells
Shared: Roguelike · Action Roguelike · Roguelite

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

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

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

Nuclear Throne
Shared: Roguelike · Action Roguelike · Bullet Hell

The Binding of Isaac: Rebirth
Shared: Roguelike · Action Roguelike · Pixel Graphics

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

Dungreed
Shared: Action Roguelike · Roguelike · Roguelite

Nova Drift
Shared: Bullet Hell · Roguelite · Action Roguelike

Brotato
Shared: Roguelike · Bullet Hell · Action Roguelike

Boneraiser Minions
Shared: Bullet Hell · Action Roguelike · Roguelite

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

Soulstone Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

Atomicrops
Shared: Roguelike · Bullet Hell · Action Roguelike

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

Rabbit and Steel
Shared: Bullet Hell · Action Roguelike · Roguelike

I Am Legion: Stand Survivors
Shared: Bullet Hell · Action Roguelike · Roguelite

Wizard of Legend
Shared: Action Roguelike · Roguelike · Pixel Graphics

Hades
Shared: Action Roguelike · Roguelite · Roguelike

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