Games like Alien Crusader
Games like Alien Crusader include Halo Infinite, Cuphead, Ultimate Custom Night, Star Saviors, and Warframe. We matched them by the tags players give Alien Crusader on Steam (Free to Play, Indie, Action, Shoot 'Em Up, and Difficult): closest matches first, and among equally close ones the better-known games.
Halo Infinite
Shared: Free to Play · Action · Singleplayer
Cuphead
Shared: Difficult · Indie · Local Co-Op
Ultimate Custom Night
Shared: Free to Play · Difficult · Singleplayer
Star Saviors
Shared: Shoot 'Em Up · Action · Indie
Warframe
Shared: Free to Play · Action · Sci-fi
FTL: Faster Than Light
Shared: Indie · Space · Sci-fi
Ikaruga
Shared: Shoot 'Em Up · Action · Indie
Endless Sky
Shared: Free to Play · Space · Singleplayer
ZeroRanger
Shared: Indie · Shoot 'Em Up · Action
Shooty Skies
Shared: Free to Play · Indie · Action
Revolution Ace
Shared: Indie · Action · Shoot 'Em Up
Dota 2
Shared: Free to Play · Action · Difficult
Star Trek Online
Shared: Free to Play · Space · Sci-fi
The Bug Butcher
Shared: Indie · Action · Shoot 'Em Up
Defy Gravity Extended
Shared: Indie · Space · Action
LUFTRAUSERS
Shared: Indie · Action · Shoot 'Em Up
Jets'n'Guns Gold
Shared: Shoot 'Em Up · Action · Indie
Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil
Shared: Shoot 'Em Up · Difficult · Action
Iron Snout
Shared: Free to Play · Action · Indie
Bit Blaster XL
Shared: Shoot 'Em Up · Difficult · Action
Enter the Gungeon
Shared: Indie · Difficult · Bullet Hell
Cyberhunt
Shared: Indie · Action · Shoot 'Em Up
EVERSPACE™
Shared: Action · Indie · Space
Hotline Miami
Shared: Action · Indie · Difficult