Games like Demon Protocol
Games like Demon Protocol include Planes, Bullets and Vodka, Revolution Ace, Bit Blaster XL, Star Saviors, and LUFTRAUSERS. We matched them by the tags players give Demon Protocol on Steam (Action, Shooter, Shoot 'Em Up, Indie, and Singleplayer): closest matches first, and among equally close ones the better-known games.
Planes, Bullets and Vodka
Shared: Action · Shoot 'Em Up · Shooter
Revolution Ace
Shared: Action · Shoot 'Em Up · Indie
Bit Blaster XL
Shared: Shoot 'Em Up · Shooter · Action
Star Saviors
Shared: Action · Shoot 'Em Up · Indie
LUFTRAUSERS
Shared: Action · Indie · Arcade
STAR WARS™ Battlefront™ II
Shared: Shooter · Singleplayer · Action
Cyberhunt
Shared: Action · Indie · Shoot 'Em Up
DRAINUS
Shared: Action · Shoot 'Em Up · Shooter
ZeroRanger
Shared: Shoot 'Em Up · Indie · Action
Ikaruga
Shared: Shoot 'Em Up · Action · Arcade
Zombotron
Shared: Action · Indie · Shooter
Hotline Miami
Shared: Action · Indie · Top-Down
KovaaK's
Shared: Action · Shooter · Indie
Nova Drift
Shared: Shoot 'Em Up · Arcade · Shooter
Project Wingman
Shared: Action · Indie · Singleplayer
ARCADE GAME SERIES: GALAGA
Shared: Action · Shoot 'Em Up · Arcade
Cube Destroyer
Shared: Action · Indie · Shoot 'Em Up
Bright Memory: Infinite
Shared: Action · Indie · Shooter
My Friend Pedro
Shared: Action · Shooter · Indie
Sky Force Reloaded
Shared: Shoot 'Em Up · Arcade · Action
BALL x PIT
Shared: Action · Arcade · Shoot 'Em Up
Intrusion 2
Shared: Action · Indie · Shooter
Space Pirates and Zombies
Shared: Action · Indie · Space
METAL SLUG
Shared: Action · Arcade · Shoot 'Em Up