Games like Orbital Siege
Games like Orbital Siege include LUFTRAUSERS, Vampire Survivors, Planes, Bullets and Vodka, ZeroRanger, and Bit Blaster XL. We matched them by the tags players give Orbital Siege on Steam (Retro, Arcade, Shoot 'Em Up, Action, and Pixel Graphics): closest matches first, and among equally close ones the better-known games.
LUFTRAUSERS
Shared: Arcade · Action · Pixel Graphics
Vampire Survivors
Shared: Pixel Graphics · Bullet Hell · 2D
Planes, Bullets and Vodka
Shared: Retro · Shoot 'Em Up · Action
ZeroRanger
Shared: Shoot 'Em Up · Action · Arcade
Bit Blaster XL
Shared: Shoot 'Em Up · Arcade · Bullet Hell
BALL x PIT
Shared: Arcade · Action · Shoot 'Em Up
Warhammer 40,000: Boltgun
Shared: Retro · Pixel Graphics · Action
Cyberhunt
Shared: Action · Shoot 'Em Up · Arcade
METAL SLUG X
Shared: Arcade · Action · Retro
Huntdown
Shared: Pixel Graphics · Action · Shoot 'Em Up
METAL SLUG
Shared: Arcade · Action · Retro
Nova Drift
Shared: Shoot 'Em Up · Arcade · Bullet Hell
Star Saviors
Shared: Shoot 'Em Up · Action · Arcade
DRAINUS
Shared: Shoot 'Em Up · Action · 2D
ARCADE GAME SERIES: GALAGA
Shared: Arcade · Retro · Shoot 'Em Up
Exit the Gungeon
Shared: Arcade · Action · Pixel Graphics
Blazing Chrome
Shared: Retro · Action · Pixel Graphics
Ikaruga
Shared: Shoot 'Em Up · Arcade · Action
METAL SLUG 3
Shared: Arcade · Action · Retro
Broforce
Shared: Action · Pixel Graphics · 2D
Shovel Knight: Treasure Trove
Shared: Retro · Pixel Graphics · 2D
Chicken Invaders Universe
Shared: Shoot 'Em Up · Action · Shooter
UFO 50
Shared: Retro · Pixel Graphics · Action
Super Galaxy Squadron EX Turbo
Shared: Shoot 'Em Up · Retro · Action