Games like Project Starship
Games like Project Starship include Vampire Survivors, LUFTRAUSERS, Bit Blaster XL, Planes, Bullets and Vodka, and Cyberhunt. We matched them by the tags players give Project Starship on Steam (Indie, Action, Casual, Bullet Hell, and Shoot 'Em Up): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Bullet Hell · Indie · Pixel Graphics

LUFTRAUSERS
Shared: Indie · Action · Bullet Hell

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

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

Cyberhunt
Shared: Indie · Action · Casual

BALL x PIT
Shared: Action · Bullet Hell · Arcade

Timberman
Shared: Indie · Casual · Action

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

UFO 50
Shared: Indie · Action · Pixel Graphics

Broforce
Shared: Action · Pixel Graphics · Indie

Megabonk
Shared: Indie · Bullet Hell · Action

Exit the Gungeon
Shared: Indie · Action · Bullet Hell

Boneraiser Minions
Shared: Bullet Hell · Indie · Pixel Graphics

Skul: The Hero Slayer
Shared: Indie · Action · Pixel Graphics

Gensokyo Night Festival
Shared: Indie · Action · Casual

TouHou Makuka Sai ~ Fantastic Danmaku Festival
Shared: Indie · Action · Bullet Hell

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

BLUE REVOLVER
Shared: Indie · Action · Bullet Hell

Chicken Invaders 5
Shared: Action · Indie · Casual

Death Must Die
Shared: Bullet Hell · Action · Pixel Graphics

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

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

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

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