Games like Space Gray X
Games like Space Gray X include Bit Blaster XL, 20 Minutes Till Dawn, Planes, Bullets and Vodka, Chicken Invaders Universe, and Nova Drift. We matched them by the tags players give Space Gray X on Steam (Spectacle fighter, Casual, Bullet Hell, Shoot 'Em Up, and Space Sim): closest matches first, and among equally close ones the better-known games.
Bit Blaster XL
Shared: Bullet Hell · Shoot 'Em Up · Shooter
20 Minutes Till Dawn
Shared: Bullet Hell · Shoot 'Em Up · Survival
Planes, Bullets and Vodka
Shared: Casual · Shoot 'Em Up · Bullet Hell
Chicken Invaders Universe
Shared: Shoot 'Em Up · Shooter · Casual
Nova Drift
Shared: Bullet Hell · Shoot 'Em Up · Shooter
EVERSPACE™
Shared: Space · Space Sim · Action
Beat Hazard
Shared: Bullet Hell · Shoot 'Em Up · Space
Star Saviors
Shared: Bullet Hell · Shoot 'Em Up · Space
STAR WARS™: Squadrons
Shared: Space · Flight · Action
LUFTRAUSERS
Shared: Bullet Hell · Shoot 'Em Up · Action
Vampire Survivors
Shared: Bullet Hell · Casual · Singleplayer
SpaceEngine
Shared: Casual · Space Sim · Space
Ikaruga
Shared: Bullet Hell · Shoot 'Em Up · Shooter
Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil
Shared: Bullet Hell · Shoot 'Em Up · Action
Touhou Kouryudou ~ Unconnected Marketeers.
Shared: Bullet Hell · Shoot 'Em Up · Shooter
Duke of Alpha Centauri
Shared: Casual · Shoot 'Em Up · Bullet Hell
Beautiful Mystic Survivors
Shared: Bullet Hell · Shoot 'Em Up · Casual
RADical ROACH Remastered
Shared: Casual · Shoot 'Em Up · Bullet Hell
Rocket Rats
Shared: Bullet Hell · Casual · Shooter
Cyberhunt
Shared: Casual · Shoot 'Em Up · Action
Apocalypse Party
Shared: Casual · Bullet Hell · Shoot 'Em Up
Greedland
Shared: Shoot 'Em Up · Bullet Hell · Casual
Megabonk
Shared: Bullet Hell · Casual · Action
Geometry Wars: Retro Evolved
Shared: Casual · Bullet Hell · Shoot 'Em Up