Games like BLUE SHIP
Games like BLUE SHIP include LUFTRAUSERS, Bit Blaster XL, Nova Drift, Vampire Survivors, and Star Saviors. We matched them by the tags players give BLUE SHIP on Steam (Action, Indie, Shooter, Shoot 'Em Up, and Bullet Hell): closest matches first, and among equally close ones the better-known games.

LUFTRAUSERS
Shared: Indie · Action · Bullet Hell

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

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

Vampire Survivors
Shared: Bullet Hell · Indie · 2D

Star Saviors
Shared: Action · Shoot 'Em Up · Indie

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

ZeroRanger
Shared: Indie · Shoot 'Em Up · Action

DRAINUS
Shared: Action · Indie · Shoot 'Em Up

Revolution Ace
Shared: Action · Indie · Shoot 'Em Up

Touhou Kinjoukyou ~ Fossilized Wonders.
Shared: Action · Shooter · Shoot 'Em Up

Savant - Ascent
Shared: Action · Indie · Shoot 'Em Up

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

My Friend Pedro
Shared: Action · Indie · Shooter

Beat Hazard
Shared: Shoot 'Em Up · Bullet Hell · Indie

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

Touhou Kouryudou ~ Unconnected Marketeers.
Shared: Action · Shoot 'Em Up · Bullet Hell

Exit the Gungeon
Shared: Indie · Action · Bullet Hell

Touhou Juuouen 〜 Unfinished Dream of All Living Ghost.
Shared: Action · Shoot 'Em Up · Shooter

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

Zombotron
Shared: Action · Indie · 2D

Swarmlake
Shared: Action · Shooter · Bullet Hell

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

Sky Force Reloaded
Shared: Shoot 'Em Up · Bullet Hell · Action

Cyberhunt
Shared: Action · Indie · Shoot 'Em Up