Games like Polandball: The Sixth Day - Destroy
Games like Polandball: The Sixth Day - Destroy include Nordic Ashes: Survivors of Ragnarok, Megabonk, Pathogenic, Yet Another Zombie Survivors, and Nuclear Throne. We matched them by the tags players give Polandball: The Sixth Day - Destroy on Steam (Action Roguelike, Strategy, Top-Down Shooter, Bullet Heaven, and Action): closest matches first, and among equally close ones the better-known games.

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

Megabonk
Shared: Action Roguelike · Bullet Heaven · Roguelike

Pathogenic
Shared: Top-Down Shooter · Action Roguelike · Roguelike

Yet Another Zombie Survivors
Shared: Action Roguelike · Bullet Heaven · Top-Down Shooter

Nuclear Throne
Shared: Action Roguelike · Roguelike · Action

Brotato
Shared: Action Roguelike · Roguelike · Bullet Heaven

BALL x PIT
Shared: Action · Action Roguelike · Top-Down Shooter

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

Vampire Survivors
Shared: Action Roguelike · 2D · Roguelike

暖雪 Warm Snow
Shared: Action Roguelike · Roguelike · 2D

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

Deep Rock Galactic: Survivor
Shared: Action Roguelike · Bullet Heaven · Top-Down Shooter

SYNTHETIK 2
Shared: Action Roguelike · Top-Down Shooter · Shooter

Halls of Torment
Shared: Action Roguelike · Roguelike · Action

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

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

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

Arms of God
Shared: Action Roguelike · Bullet Heaven · Top-Down Shooter

Blazing Beaks
Shared: Action Roguelike · Top-Down Shooter · Roguelike

Soulstone Survivors
Shared: Action Roguelike · Bullet Heaven · Roguelike

Hades
Shared: Action Roguelike · Action · Roguelike

NIMRODS
Shared: Action Roguelike · Bullet Heaven · Top-Down Shooter

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

20 Minutes Till Dawn
Shared: Action Roguelike · Top-Down Shooter · Bullet Heaven