Games like Stellarium
Games like Stellarium include Vampire Survivors, Planes, Bullets and Vodka, BALL x PIT, Bit Blaster XL, and Touhou Tenkuushou ~ Hidden Star in Four Seasons.. We matched them by the tags players give Stellarium on Steam (Bullet Hell, Action, Casual, Shoot 'Em Up, and Arcade): closest matches first, and among equally close ones the better-known games.
Vampire Survivors
Shared: Bullet Hell · 2D · Casual
Planes, Bullets and Vodka
Shared: Action · Casual · Bullet Hell
BALL x PIT
Shared: Action · Bullet Hell · Arcade
Bit Blaster XL
Shared: Bullet Hell · Shoot 'Em Up · Arcade
Touhou Tenkuushou ~ Hidden Star in Four Seasons.
Shared: Bullet Hell · Shoot 'Em Up · Female Protagonist
Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil
Shared: Bullet Hell · Shoot 'Em Up · Action
LUFTRAUSERS
Shared: Bullet Hell · Action · Arcade
TouHou Makuka Sai ~ Fantastic Danmaku Festival
Shared: Bullet Hell · Action · Casual
Mushihimesama
Shared: Bullet Hell · Action · Shoot 'Em Up
Touhou Kinjoukyou ～ Fossilized Wonders.
Shared: Bullet Hell · Action · Shoot 'Em Up
Touhou Juuouen 〜 Unfinished Dream of All Living Ghost.
Shared: Action · Bullet Hell · Shoot 'Em Up
Nova Drift
Shared: Bullet Hell · Shoot 'Em Up · Arcade
Cyberhunt
Shared: Action · Casual · Shoot 'Em Up
DRAINUS
Shared: Action · Shoot 'Em Up · Bullet Hell
Touhou Fuujinroku ~ Mountain of Faith.
Shared: Action · Bullet Hell · Shoot 'Em Up
ZeroRanger
Shared: Bullet Hell · Shoot 'Em Up · Action
TouHou Makuka Sai ~ Fantastic Danmaku Festival Part II
Shared: Bullet Hell · Shoot 'Em Up · Action
DJMAX RESPECT V
Shared: Casual · Action · 2D
Heavy Weapon Deluxe
Shared: Casual · Action · Bullet Hell
Geometry Wars: Retro Evolved
Shared: Casual · Bullet Hell · Arcade
Touhou Kouryudou ~ Unconnected Marketeers.
Shared: Bullet Hell · Action · Shoot 'Em Up
A Dance of Fire and Ice
Shared: Arcade · 2D · Singleplayer
TouHou Makuka Sai ~ Fantastic Danmaku Festival Part III
Shared: Bullet Hell · Shoot 'Em Up · Action
Dimension Tripper Neptune: TOP NEP
Shared: Action · Bullet Hell · Arcade