Games like Potassium Poisoning
Games like Potassium Poisoning include Megabonk, Death Must Die, Vampire Survivors, Dead Cells, and Halls of Torment. We matched them by the tags players give Potassium Poisoning on Steam (Action, Adventure, Action Roguelike, Roguelike, and Bullet Heaven): closest matches first, and among equally close ones the better-known games.

Megabonk
Shared: Action Roguelike · Bullet Heaven · Roguelike

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

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelite

Dead Cells
Shared: Adventure · Roguelike · Action Roguelike

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

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

Hades
Shared: Action Roguelike · Action · Hack and Slash

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

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

BALL x PIT
Shared: Action · Roguelike · Action Roguelike

Soulstone Survivors
Shared: Action Roguelike · Bullet Heaven · Roguelike

Hades II
Shared: Action · Roguelike · Action Roguelike

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

Brotato
Shared: Roguelike · Action Roguelike · Bullet Hell

Nuclear Throne
Shared: Action Roguelike · Roguelike · Action

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

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

Wizard of Legend
Shared: Action Roguelike · Roguelike · Action

Realm of the Mad God Exalt
Shared: Roguelike · Bullet Hell · Action Roguelike

Boneraiser Minions
Shared: Action Roguelike · Bullet Hell · Bullet Heaven

Moonlighter
Shared: Hack and Slash · Roguelike · Action Roguelike

Children of Morta
Shared: Roguelike · Action Roguelike · Hack and Slash

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

Dungreed
Shared: Action Roguelike · Action · Roguelike