Games like Necrogen
Games like Necrogen include BRAZILIAN DRUG DEALER 3: I OPENED A PORTAL TO HELL IN THE FAVELA TRYING TO REVIVE MIT AIA I NEED TO CLOSE IT, ULTRAKILL, ODDCORE, Bloodshed, and Nova Drift. We matched them by the tags players give Necrogen on Steam (Arena Shooter, Boomer Shooter, Bullet Hell, Shoot 'Em Up, and FPS): closest matches first, and among equally close ones the better-known games.

BRAZILIAN DRUG DEALER 3: I OPENED A PORTAL TO HELL IN THE FAVELA TRYING TO REVIVE MIT AIA I NEED TO CLOSE IT
Shared: Boomer Shooter · Arena Shooter · FPS

ULTRAKILL
Shared: Boomer Shooter · Arena Shooter · FPS

ODDCORE
Shared: Arena Shooter · Boomer Shooter · FPS

Bloodshed
Shared: Boomer Shooter · FPS · Bullet Hell

Nova Drift
Shared: Bullet Hell · Shoot 'Em Up · Arena Shooter

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

POSTAL: Brain Damaged
Shared: Boomer Shooter · Action · Shooter

MULLET MADJACK
Shared: Boomer Shooter · FPS · Action

Fashion Police Squad
Shared: Boomer Shooter · Arena Shooter · FPS

AMID EVIL
Shared: Boomer Shooter · Arena Shooter · FPS

Swarmlake
Shared: FPS · Action · Bullet Hell

Devil Daggers
Shared: FPS · Arena Shooter · Action

Harbinger
Shared: Arena Shooter · Boomer Shooter · Shoot 'Em Up

Echo Point Nova
Shared: Arena Shooter · FPS · Shooter

CULTIC
Shared: Boomer Shooter · FPS · Action

Bit Blaster XL
Shared: Bullet Hell · Shoot 'Em Up · Shooter

Forgive Me Father
Shared: Boomer Shooter · FPS · Action

Turbo Overkill
Shared: Boomer Shooter · FPS · Action

DUSK
Shared: Boomer Shooter · FPS · Shooter

Planes, Bullets and Vodka
Shared: Shoot 'Em Up · Bullet Hell · Action

Ratz Instagib
Shared: Arena Shooter · Boomer Shooter · FPS

DOOM
Shared: FPS · Action · Shooter

Anger Foot
Shared: Boomer Shooter · FPS · Action

Prodeus
Shared: Boomer Shooter · FPS · Action