Games like Deep Deep Deep Nightmare
Games like Deep Deep Deep Nightmare include Chippy, Minishoot' Adventures, Time Wasters, State of Anarchy: Master of Mayhem, and Sektori. We matched them by the tags players give Deep Deep Deep Nightmare on Steam (Arena Shooter, Top-Down Shooter, Twin Stick Shooter, Bullet Hell, and Shooter): closest matches first, and among equally close ones the better-known games.
Chippy
Shared: Arena Shooter · Twin Stick Shooter · Bullet Hell
Minishoot' Adventures
Shared: Twin Stick Shooter · Bullet Hell · Top-Down
Time Wasters
Shared: Twin Stick Shooter · Bullet Hell · Arena Shooter
State of Anarchy: Master of Mayhem
Shared: Top-Down Shooter · Twin Stick Shooter · Bullet Hell
Sektori
Shared: Twin Stick Shooter · Arena Shooter · Arcade
BALL x PIT
Shared: Bullet Hell · Arcade · Top-Down Shooter
Bit Blaster XL
Shared: Bullet Hell · Shooter · Arcade
Escape From Duckov
Shared: Top-Down Shooter · Shooter · Action
Deep Rock Galactic: Survivor
Shared: Top-Down Shooter · Bullet Hell · Arena Shooter
Vampire Survivors
Shared: Bullet Hell · 2D · Arcade
Nova Drift
Shared: Bullet Hell · Arena Shooter · Arcade
Titan Attacks!
Shared: Arena Shooter · Bullet Hell · Top-Down Shooter
Sky Force Reloaded
Shared: Top-Down Shooter · Bullet Hell · Arcade
Cyberhunt
Shared: Twin Stick Shooter · Arcade · Action
Deployment
Shared: Arena Shooter · Top-Down Shooter · Shooter
Halo: Spartan Assault
Shared: Top-Down Shooter · Twin Stick Shooter · Shooter
Geometry Wars: Retro Evolved
Shared: Twin Stick Shooter · Arcade · Bullet Hell
Relic Hunters Zero: Remix
Shared: Twin Stick Shooter · Top-Down Shooter · Bullet Hell
Nex Machina
Shared: Twin Stick Shooter · Bullet Hell · Arcade
Enter the Gungeon
Shared: Bullet Hell · Twin Stick Shooter · 2D
SNKRX
Shared: Arena Shooter · Top-Down Shooter · Arcade
Bot Vice
Shared: Top-Down Shooter · Bullet Hell · Arcade
Brotato
Shared: Bullet Hell · Arena Shooter · Top-Down Shooter
Planes, Bullets and Vodka
Shared: Bullet Hell · Arcade · Shooter