Games like Mushihimesama
Games like Mushihimesama include Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil, Ikaruga, Touhou Tenkuushou ~ Hidden Star in Four Seasons., Touhou Kouryudou ~ Unconnected Marketeers., and Bit Blaster XL. We matched them by the tags players give Mushihimesama on Steam (Bullet Hell, Shoot 'Em Up, Arcade, Action, and Anime): closest matches first, and among equally close ones the better-known games.

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

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

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

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

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

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

LUFTRAUSERS
Shared: Bullet Hell · Arcade · Action

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

Cuphead
Shared: Difficult · Great Soundtrack · Bullet Hell

TouHou Makuka Sai ~ Fantastic Danmaku Festival Part II
Shared: Bullet Hell · Shoot 'Em Up · Great Soundtrack

Touhou Kanjuden ~ Legacy of Lunatic Kingdom.
Shared: Bullet Hell · Great Soundtrack · Difficult

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

Touhou Kikeijuu ~ Wily Beast and Weakest Creature.
Shared: Bullet Hell · Shoot 'Em Up · Great Soundtrack

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

Deathsmiles
Shared: Bullet Hell · Shoot 'Em Up · Arcade

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

METAL SLUG X
Shared: Arcade · Action · Shoot 'Em Up

METAL SLUG 3
Shared: Arcade · Action · Classic

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

BALL x PIT
Shared: Bullet Hell · Action · Arcade

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

Touhou Chireiden ~ Subterranean Animism.
Shared: Bullet Hell · Action · Shoot 'Em Up

DARIUSBURST Chronicle Saviours
Shared: Shoot 'Em Up · Arcade · Action

TouHou Makuka Sai ~ Fantastic Danmaku Festival
Shared: Bullet Hell · Action · Shoot 'Em Up