Games like Mega Dimension Ripper 9000
Games like Mega Dimension Ripper 9000 include Enter the Gungeon, Vampire Survivors, Megabonk, Dead Estate, and Nuclear Throne. We matched them by the tags players give Mega Dimension Ripper 9000 on Steam (Action Roguelike, Bullet Hell, Twin Stick Shooter, 4 Player Local, and Perma Death): closest matches first, and among equally close ones the better-known games.

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

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · Roguelike

Megabonk
Shared: Action Roguelike · Bullet Hell · Roguelike

Dead Estate
Shared: Action Roguelike · Twin Stick Shooter · Bullet Hell

Nuclear Throne
Shared: Action Roguelike · Bullet Hell · Roguelike

The Binding of Isaac
Shared: Action Roguelike · Roguelike · Top-Down

Brotato
Shared: Bullet Hell · Action Roguelike · Roguelike

Rogue: Genesia
Shared: Bullet Hell · Action Roguelike · Twin Stick Shooter

Magicraft
Shared: Action Roguelike · Bullet Hell · Roguelike

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

Soulstone Survivors
Shared: Action Roguelike · Bullet Hell · Roguelike

Crab Champions
Shared: Action Roguelike · Roguelike · Bullet Hell

Atomicrops
Shared: Bullet Hell · Action Roguelike · Roguelike

Voidigo
Shared: Action Roguelike · Twin Stick Shooter · Bullet Hell

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

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

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

Windowkill
Shared: Action Roguelike · Bullet Hell · Twin Stick Shooter

SYNTHETIK 2
Shared: Action Roguelike · Twin Stick Shooter · Perma Death

Swarm Grinder
Shared: Action Roguelike · Bullet Hell · Roguelike

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

Deep Rock Galactic: Survivor
Shared: Action Roguelike · Bullet Hell · Top-Down

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

Risk of Rain (2013)
Shared: Action Roguelike · Roguelike · Perma Death