Games like GRADIUS ORIGINS

Games like GRADIUS ORIGINS include Planes, Bullets and Vodka, LUFTRAUSERS, Huntdown, Bit Blaster XL, and ARCADE GAME SERIES: GALAGA. We matched them by the tags players give GRADIUS ORIGINS on Steam (Arcade, Action, Shooter, 2D, and Shoot 'Em Up): closest matches first, and among equally close ones the better-known games.