Games like Battle Marine
Games like Battle Marine include Warhammer 40,000: Boltgun, Vampire Survivors, LUFTRAUSERS, Broforce, and Exit the Gungeon. We matched them by the tags players give Battle Marine on Steam (Action, Arcade, Shooter, Boomer Shooter, and Bullet Hell): closest matches first, and among equally close ones the better-known games.

Warhammer 40,000: Boltgun
Shared: Boomer Shooter · Action · Shooter

Vampire Survivors
Shared: Bullet Hell · 2D · Pixel Graphics

LUFTRAUSERS
Shared: Arcade · Action · Bullet Hell

Broforce
Shared: Action · 2D · Pixel Graphics

Exit the Gungeon
Shared: Arcade · Action · Bullet Hell

Bit Blaster XL
Shared: Bullet Hell · Shooter · Arcade

Planes, Bullets and Vodka
Shared: Action · Arcade · Bullet Hell

UFO 50
Shared: Action · Arcade · Pixel Graphics

BALL x PIT
Shared: Action · Arcade · Bullet Hell

Commando Collection
Shared: Action · Shooter · Arcade

Huntdown
Shared: Action · Shooter · Pixel Graphics

ZeroRanger
Shared: Action · Bullet Hell · Arcade

Hotline Miami
Shared: Action · Pixel Graphics · 1980s

Hotline Miami 2: Wrong Number
Shared: Action · Pixel Graphics · 1980s

Angel at Dusk
Shared: Action · Shooter · Bullet Hell

Turbo Overkill
Shared: Action · Boomer Shooter · Shooter

METAL SLUG
Shared: Action · Arcade · 2D

METAL SLUG 3
Shared: Arcade · Action · Shooter

MULLET MADJACK
Shared: Arcade · Boomer Shooter · Action

Nova Drift
Shared: Arcade · Bullet Hell · Shooter

Kung Fury: Street Rage - Ultimate Edition
Shared: Arcade · Action · 2D

DRAINUS
Shared: Action · Shooter · 2D

Enter the Gungeon
Shared: Bullet Hell · Pixel Graphics · Action

Halls of Torment
Shared: Bullet Hell · Action · Pixel Graphics