Games like Super Galaxy Squadron EX Turbo
Games like Super Galaxy Squadron EX Turbo include LUFTRAUSERS, ZeroRanger, Bit Blaster XL, Vampire Survivors, and Ikaruga. We matched them by the tags players give Super Galaxy Squadron EX Turbo on Steam (Shoot 'Em Up, Bullet Hell, Action, Indie, and Retro): closest matches first, and among equally close ones the better-known games.

LUFTRAUSERS
Shared: Bullet Hell · Indie · Action

ZeroRanger
Shared: Shoot 'Em Up · Bullet Hell · Indie

Bit Blaster XL
Shared: Shoot 'Em Up · Bullet Hell · Arcade

Vampire Survivors
Shared: Bullet Hell · Indie · Pixel Graphics

Ikaruga
Shared: Shoot 'Em Up · Bullet Hell · Action

Star Saviors
Shared: Shoot 'Em Up · Bullet Hell · Action

Planes, Bullets and Vodka
Shared: Shoot 'Em Up · Action · Bullet Hell

Hotline Miami
Shared: Action · Indie · Pixel Graphics

Exit the Gungeon
Shared: Action · Indie · Bullet Hell

Hotline Miami 2: Wrong Number
Shared: Action · Pixel Graphics · Great Soundtrack

Cuphead
Shared: Difficult · Indie · Bullet Hell

Shovel Knight: Treasure Trove
Shared: Retro · Indie · Pixel Graphics

Jet Lancer
Shared: Action · Indie · Shoot 'Em Up

BALL x PIT
Shared: Action · Bullet Hell · Shoot 'Em Up

BLUE REVOLVER
Shared: Shoot 'Em Up · Bullet Hell · Action

Touhou Tenkuushou ~ Hidden Star in Four Seasons.
Shared: Bullet Hell · Shoot 'Em Up · Indie

Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil
Shared: Shoot 'Em Up · Bullet Hell · Action

UBERMOSH
Shared: Action · Indie · Pixel Graphics

Revolution Ace
Shared: Shoot 'Em Up · Action · Bullet Hell

Cyberhunt
Shared: Action · Indie · Shoot 'Em Up

Nova Drift
Shared: Shoot 'Em Up · Bullet Hell · Arcade

UFO 50
Shared: Indie · Action · Retro

Enter the Gungeon
Shared: Bullet Hell · Indie · Pixel Graphics

DRAINUS
Shared: Shoot 'Em Up · Action · Indie