Games like Shmup Boss
Games like Shmup Boss include Bit Blaster XL, Planes, Bullets and Vodka, Nova Drift, Sky Force Reloaded, and Waves. We matched them by the tags players give Shmup Boss on Steam (Shoot 'Em Up, 2.5D, Bullet Hell, Shooter, and Arcade): closest matches first, and among equally close ones the better-known games.
Bit Blaster XL
Shared: Shoot 'Em Up · Bullet Hell · Shooter
Planes, Bullets and Vodka
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Nova Drift
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Sky Force Reloaded
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Waves
Shared: Shoot 'Em Up · Bullet Hell · Shooter
BALL x PIT
Shared: Bullet Hell · Arcade · Shoot 'Em Up
LUFTRAUSERS
Shared: Bullet Hell · Arcade · Shoot 'Em Up
ZeroRanger
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Touhou Kinjoukyou ～ Fossilized Wonders.
Shared: Shoot 'Em Up · Bullet Hell · Shooter
Revolution Ace
Shared: Shoot 'Em Up · Bullet Hell · Shooter
Vampire Survivors
Shared: Bullet Hell · 2D · Arcade
Beat Hazard
Shared: Shoot 'Em Up · Bullet Hell · 2D
Ikaruga
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Chippy
Shared: Bullet Hell · Shoot 'Em Up · Arcade
Star Saviors
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Touhou Juuouen 〜 Unfinished Dream of All Living Ghost.
Shared: Shoot 'Em Up · Bullet Hell · Shooter
Super Bit Blaster XL
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Commando Collection
Shared: Shooter · Bullet Hell · Arcade
BLUE REVOLVER
Shared: Shoot 'Em Up · Bullet Hell · Arcade
DRAINUS
Shared: Shoot 'Em Up · Shooter · Action
DoDonPachi Resurrection
Shared: Shoot 'Em Up · Bullet Hell · Shooter
Geometry Wars: Retro Evolved
Shared: Arcade · Bullet Hell · Shoot 'Em Up
Mushihimesama
Shared: Shoot 'Em Up · Bullet Hell · Arcade
Alex Jones: NWO Wars
Shared: Shoot 'Em Up · Shooter · Arcade