Games like DUMPLing
Games like DUMPLing include Brotato, Megabonk, Vampire Survivors, BALL x PIT, and Nova Drift. We matched them by the tags players give DUMPLing on Steam (Roguelike, Singleplayer, Action Roguelike, Bullet Hell, and Bullet Heaven): closest matches first, and among equally close ones the better-known games.

Brotato
Shared: Roguelike · Singleplayer · Action Roguelike

Megabonk
Shared: Roguelike · Action Roguelike · Bullet Heaven

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Singleplayer

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

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

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

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

Yet Another Zombie Survivors
Shared: Action Roguelike · Bullet Heaven · Singleplayer

The Binding of Isaac: Rebirth
Shared: Roguelike · Action Roguelike · Singleplayer

Soulstone Survivors
Shared: Action Roguelike · Bullet Heaven · Roguelike

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

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

Apocalypse Party
Shared: Singleplayer · Action Roguelike · Bullet Hell

The Binding of Isaac
Shared: Roguelike · Action Roguelike · Replay Value

Hades
Shared: Action Roguelike · Roguelike · Singleplayer

Time Wasters
Shared: Action Roguelike · Bullet Heaven · Bullet Hell

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

Neon Abyss
Shared: Roguelike · Bullet Heaven · Singleplayer

Dead Cells
Shared: Roguelike · Action Roguelike · Singleplayer

Tiny Rogues
Shared: Action Roguelike · Bullet Hell · Roguelike

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

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

The Spell Brigade
Shared: Bullet Heaven · Bullet Hell · Roguelike

Nuclear Throne
Shared: Roguelike · Action Roguelike · Bullet Hell