Games like Ikaruga
Games like Ikaruga include ZeroRanger, Bit Blaster XL, LUFTRAUSERS, Cuphead, and Star Saviors. We matched them by the tags players give Ikaruga on Steam (Shoot 'Em Up, Bullet Hell, Arcade, Classic, and Action): closest matches first, and among equally close ones the better-known games.
ZeroRanger
Shared: Shoot 'Em Up · Bullet Hell · Action
Bit Blaster XL
Shared: Shoot 'Em Up · Bullet Hell · Arcade
LUFTRAUSERS
Shared: Bullet Hell · Arcade · Shoot 'Em Up
Cuphead
Shared: Difficult · Great Soundtrack · Bullet Hell
Star Saviors
Shared: Shoot 'Em Up · Bullet Hell · Action
METAL SLUG 3
Shared: Arcade · Classic · Action
Mushihimesama
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Revolution Ace
Shared: Shoot 'Em Up · Bullet Hell · Action
METAL SLUG X
Shared: Arcade · Action · Shoot 'Em Up
Jets'n'Guns Gold
Shared: Shoot 'Em Up · Bullet Hell · Great Soundtrack
Nova Drift
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Nex Machina
Shared: Bullet Hell · Arcade · Action
Touhou Tenkuushou ~ Hidden Star in Four Seasons.
Shared: Bullet Hell · Shoot 'Em Up · Great Soundtrack
Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil
Shared: Shoot 'Em Up · Bullet Hell · Action
Halo: The Master Chief Collection
Shared: Classic · Great Soundtrack · Sci-fi
Touhou Kouryudou ~ Unconnected Marketeers.
Shared: Shoot 'Em Up · Bullet Hell · Action
Geometry Wars™ 3: Dimensions Evolved
Shared: Shoot 'Em Up · Arcade · Action
Planes, Bullets and Vodka
Shared: Shoot 'Em Up · Bullet Hell · Action
Sky Force Reloaded
Shared: Shoot 'Em Up · Bullet Hell · Arcade
DARIUSBURST Chronicle Saviours
Shared: Shoot 'Em Up · Arcade · Action
Just Shapes & Beats
Shared: Bullet Hell · Great Soundtrack · Difficult
Exit the Gungeon
Shared: Arcade · Bullet Hell · Action
Half-Life 2
Shared: Action · Classic · Sci-fi
Super Hexagon
Shared: Arcade · Great Soundtrack · Difficult