Games like Hammer Knight
Games like Hammer Knight include Vampire Survivors, BALL x PIT, Brotato, Enter the Gungeon, and Megabonk. We matched them by the tags players give Hammer Knight on Steam (Tower Defense, Action Roguelike, Bullet Hell, Arcade, and Base Building): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Arcade

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

Brotato
Shared: Bullet Hell · Action Roguelike · Roguelike

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

Megabonk
Shared: Action Roguelike · Bullet Hell · Roguelike

Monsters are Coming!
Shared: Tower Defense · Bullet Hell · Action Roguelike

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

Nova Drift
Shared: Bullet Hell · Action Roguelike · Arcade

Crab Champions
Shared: Action Roguelike · Arcade · Roguelike

Necrosmith
Shared: Action Roguelike · Tower Defense · Bullet Hell

暖雪 Warm Snow
Shared: Action Roguelike · Action-Adventure · Roguelike

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

Tiny Rogues
Shared: Action Roguelike · Bullet Hell · Roguelike

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

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

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

Nuclear Throne
Shared: Action Roguelike · Bullet Hell · Roguelike

Boneraiser Minions
Shared: Action Roguelike · Bullet Hell · Arcade

Cult of the Lamb
Shared: Action Roguelike · Base Building · Building

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

Mindustry
Shared: Tower Defense · Base Building · Resource Management

Rogue: Genesia
Shared: Action Roguelike · Bullet Hell · Arcade

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

Soulstone Survivors
Shared: Action Roguelike · Bullet Hell · Roguelike