Games like Plinko Dungeon
Games like Plinko Dungeon include Megabonk, Vampire Survivors, Deep Rock Galactic: Survivor, Rogue: Genesia, and Death Must Die. We matched them by the tags players give Plinko Dungeon on Steam (Action Roguelike, Bullet Heaven, Roguelite, PvE, and Difficult): closest matches first, and among equally close ones the better-known games.

Megabonk
Shared: Action Roguelike · Bullet Heaven · Roguelite

Vampire Survivors
Shared: Action Roguelike · Roguelite · 2D

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

Rogue: Genesia
Shared: Bullet Heaven · Action Roguelike · Roguelite

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

Soulstone Survivors
Shared: Action Roguelike · Bullet Heaven · Roguelite

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

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

Boneraiser Minions
Shared: Action Roguelike · Roguelite · Bullet Heaven

BALL x PIT
Shared: Roguelite · Action Roguelike · Action

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

Hades
Shared: Action Roguelike · Roguelite · Action

The Spell Brigade
Shared: Bullet Heaven · Roguelite · Action Roguelike

Shape of Dreams
Shared: Action Roguelike · PvE · Roguelite

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Difficult · Indie

The Binding of Isaac
Shared: Action Roguelike · Difficult · Action

Nova Drift
Shared: Roguelite · Action Roguelike · Arcade

Antivirus Survivors 2003 Professional
Shared: Action Roguelike · Bullet Heaven · Roguelite

Time Wasters
Shared: Action Roguelike · Bullet Heaven · Roguelite

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

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

Be My Horde
Shared: Action Roguelike · Bullet Heaven · Roguelite

Rogue Legacy 2
Shared: Arcade · Roguelite · Action

Spirit Hunters: Infinite Horde
Shared: Action Roguelike · Bullet Heaven · Roguelite