Games like I Got Isekai'd Into a Shmup
Games like I Got Isekai'd Into a Shmup include Vampire Survivors, ZeroRanger, LUFTRAUSERS, BALL x PIT, and Broforce. We matched them by the tags players give I Got Isekai'd Into a Shmup on Steam (Action, Arcade, Shoot 'Em Up, Indie, and 2D): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: 2D · Indie · Pixel Graphics

ZeroRanger
Shared: Shoot 'Em Up · Indie · Action

LUFTRAUSERS
Shared: Arcade · Action · Indie

BALL x PIT
Shared: Action · Arcade · Shoot 'Em Up

Broforce
Shared: Action · 2D · Pixel Graphics

BLUE REVOLVER
Shared: Shoot 'Em Up · Action · Indie

DRAINUS
Shared: Action · Shoot 'Em Up · Indie

Bit Blaster XL
Shared: Shoot 'Em Up · Arcade · Action

Cyberhunt
Shared: Action · Indie · Shoot 'Em Up

Bleed 2
Shared: Action · Shoot 'Em Up · Indie

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

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

Huntdown
Shared: Action · Shoot 'Em Up · Pixel Graphics

Streets of Rage 4
Shared: Action · Indie · Arcade

Touhou Fuujinroku ~ Mountain of Faith.
Shared: Action · Indie · Shoot 'Em Up

Exit the Gungeon
Shared: Arcade · Action · Indie

Jamestown
Shared: Shoot 'Em Up · Arcade · Indie

Mushihimesama
Shared: Arcade · Shoot 'Em Up · Action

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

Blazing Chrome
Shared: Action · Indie · Shoot 'Em Up

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

UFO 50
Shared: Action · Indie · Arcade

METAL SLUG
Shared: Action · Arcade · 2D

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