Games like Touhou: Dreaming Butterfly | 东方蝶梦志
Games like Touhou: Dreaming Butterfly | 东方蝶梦志 include TouHou Makuka Sai ~ Fantastic Danmaku Festival, TouHou Makuka Sai ~ Fantastic Danmaku Festival Part II, Vampire Survivors, Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil, and Gensokyo Night Festival. We matched them by the tags players give Touhou: Dreaming Butterfly | 东方蝶梦志 on Steam (Action, Indie, Casual, Faith, and Bullet Hell): closest matches first, and among equally close ones the better-known games.

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

TouHou Makuka Sai ~ Fantastic Danmaku Festival Part II
Shared: Indie · Bullet Hell · Faith

Vampire Survivors
Shared: Bullet Hell · Indie · Casual

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

Gensokyo Night Festival
Shared: Action · Indie · Casual

Touhou Fuujinroku ~ Mountain of Faith.
Shared: Action · Indie · Bullet Hell

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

Touhou Kouryudou ~ Unconnected Marketeers.
Shared: Action · Bullet Hell · Faith

Cyberhunt
Shared: Action · Indie · Casual

Touhou Blooming Chaos 2
Shared: Action · Indie · Faith

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

RADical ROACH Remastered
Shared: Action · Indie · Casual

Touhou Kikeijuu ~ Wily Beast and Weakest Creature.
Shared: Indie · Bullet Hell · Action

Chicken Invaders 5
Shared: Action · Indie · Casual

Megabonk
Shared: Indie · Action · Bullet Hell

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

LUFTRAUSERS
Shared: Indie · Action · Bullet Hell

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

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

Touhou Chireiden ~ Subterranean Animism.
Shared: Action · Indie · Bullet Hell

20 Minutes Till Dawn
Shared: Bullet Hell · Shoot 'Em Up · Casual

Touhou Kanjuden ~ Legacy of Lunatic Kingdom.
Shared: Bullet Hell · Indie · Faith

Symphony
Shared: Indie · Action · Casual

Chicken Invaders 4
Shared: Indie · Action · Casual