Games like Procyon
Games like Procyon include Revolution Ace, Huntdown, Ikaruga, ZeroRanger, and DRAINUS. We matched them by the tags players give Procyon on Steam (Shoot 'Em Up, Action, Indie, Bullet Hell, and Shooter): closest matches first, and among equally close ones the better-known games.
Revolution Ace
Shared: Shoot 'Em Up · Action · Indie
Huntdown
Shared: Action · Shoot 'Em Up · Shooter
Ikaruga
Shared: Shoot 'Em Up · Bullet Hell · Action
ZeroRanger
Shared: Shoot 'Em Up · Indie · Bullet Hell
DRAINUS
Shared: Shoot 'Em Up · Action · Indie
Broforce
Shared: Action · Local Co-Op · Indie
Bit Blaster XL
Shared: Shoot 'Em Up · Bullet Hell · Shooter
Star Saviors
Shared: Shoot 'Em Up · Action · Bullet Hell
Sky Force Reloaded
Shared: Shoot 'Em Up · Bullet Hell · Action
Nova Drift
Shared: Shoot 'Em Up · Bullet Hell · Shooter
Jets'n'Guns 2
Shared: Action · Shoot 'Em Up · Indie
Nex Machina
Shared: Action · Bullet Hell · Shoot 'Em Up
My Friend Pedro
Shared: Action · Indie · Shooter
LUFTRAUSERS
Shared: Indie · Action · Bullet Hell
Enter the Gungeon
Shared: Bullet Hell · Indie · Local Co-Op
Zombotron
Shared: Action · Indie · Shooter
Cuphead
Shared: Local Co-Op · Indie · Bullet Hell
Syder Arcade
Shared: Shoot 'Em Up · Indie · Bullet Hell
Touhou Kouryudou ~ Unconnected Marketeers.
Shared: Shoot 'Em Up · Action · Bullet Hell
Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil
Shared: Shoot 'Em Up · Bullet Hell · Action
Sine Mora
Shared: Shoot 'Em Up · Indie · Action
Chicken Invaders 5
Shared: Action · Shoot 'Em Up · Indie
Intrusion 2
Shared: Action · Indie · Shooter
REVOLVER360 RE:ACTOR
Shared: Shoot 'Em Up · Action · Bullet Hell