Games like Boom Blaster
Games like Boom Blaster include Warhammer 40,000: Shootas, Blood & Teef, SANABI, Hitler is my crush, Huntdown, and Anomaly Agent. We matched them by the tags players give Boom Blaster on Steam (Hero Shooter, Side Scroller, 2D Platformer, Shoot 'Em Up, and Bullet Hell): closest matches first, and among equally close ones the better-known games.
Warhammer 40,000: Shootas, Blood & Teef
Shared: Side Scroller · 2D Platformer · Shoot 'Em Up
SANABI
Shared: 2D Platformer · Action · Side Scroller
Hitler is my crush
Shared: Hero Shooter · Side Scroller · Shoot 'Em Up
Huntdown
Shared: Side Scroller · Shoot 'Em Up · Shooter
Anomaly Agent
Shared: Side Scroller · 2D Platformer · Platformer
Super Time Force Ultra
Shared: Side Scroller · 2D Platformer · Bullet Hell
Metal Slug: Awakening
Shared: 2D Platformer · Shoot 'Em Up · Arcade
Rise & Shine
Shared: Side Scroller · 2D Platformer · Bullet Hell
Alex Jones: NWO Wars
Shared: 2D Platformer · Side Scroller · Shoot 'Em Up
Exit the Gungeon
Shared: Bullet Hell · Arcade · 2D Platformer
Touhou Luna Nights
Shared: Side Scroller · Bullet Hell · Platformer
Touhou Hero of Ice Fairy
Shared: Side Scroller · Bullet Hell · Platformer
Planet of Lana
Shared: 2D Platformer · Puzzle · Platformer
Contra: Operation Galuga
Shared: 2D Platformer · Side Scroller · Shoot 'Em Up
Cave Crawler
Shared: Side Scroller · 2D Platformer · Platformer
Momodora: Reverie Under The Moonlight
Shared: Side Scroller · 2D Platformer · Female Protagonist
Deepest Sword
Shared: Side Scroller · 2D Platformer · Platformer
Bit Blaster XL
Shared: Shoot 'Em Up · Bullet Hell · Shooter
Nova Drift
Shared: Shoot 'Em Up · Bullet Hell · Arcade
DRAINUS
Shared: Shoot 'Em Up · Side Scroller · Bullet Hell
METAL SLUG
Shared: Side Scroller · Shoot 'Em Up · Arcade
Afterimage
Shared: 2D Platformer · Side Scroller · Female Protagonist
Guns, Gore & Cannoli
Shared: Side Scroller · Shoot 'Em Up · Action
Broforce
Shared: Side Scroller · Platformer · Action