Games like Blast Head
Games like Blast Head include Megabonk, Vampire Survivors, Brotato, Soulstone Survivors, and Halls of Torment. We matched them by the tags players give Blast Head on Steam (Roguelike, Casual, Singleplayer, Bullet Heaven, and Action): closest matches first, and among equally close ones the better-known games.

Megabonk
Shared: Roguelike · Bullet Heaven · Action Roguelike

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelike

Brotato
Shared: Roguelike · Singleplayer · Bullet Heaven

Soulstone Survivors
Shared: Bullet Heaven · Roguelike · Action Roguelike

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

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

Hades
Shared: Action Roguelike · Roguelike · Action

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

BALL x PIT
Shared: Roguelike · Action · Action Roguelike

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

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

Hades II
Shared: Roguelike · Action · Action Roguelike

Rogue Legacy
Shared: Roguelike · Singleplayer · Action

Astro Prospector
Shared: Roguelike · Casual · Action Roguelike

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

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

Jotunnslayer: Hordes of Hel
Shared: Bullet Heaven · Roguelike · Action Roguelike

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

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

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

20 Minutes Till Dawn
Shared: Action Roguelike · Bullet Hell · Singleplayer

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

Noobs Want to Live
Shared: Roguelike · Action · Casual

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