Games like 星尘战区 Stardust Theater
Games like 星尘战区 Stardust Theater include Vampire Survivors, Mountain, To The Core, Noobs Want to Live, and Turbo Pug. We matched them by the tags players give 星尘战区 Stardust Theater on Steam (Casual, Side Scroller, Bullet Hell, Experimental, and 2D): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Bullet Hell · 2D · Casual

Mountain
Shared: Casual · Experimental · Indie

To The Core
Shared: Casual · 2D · Procedural Generation

Noobs Want to Live
Shared: Bullet Hell · Casual · 2.5D

Turbo Pug
Shared: Casual · Side Scroller · 2D

Undertale
Shared: Multiple Endings · 2D · Bullet Hell

Touhou Hero of Ice Fairy
Shared: Bullet Hell · Side Scroller · 2D

Rabi-Ribi
Shared: Bullet Hell · Side Scroller · Casual

TEVI
Shared: Bullet Hell · Side Scroller · 2D

Zup! S
Shared: Casual · 2D · Indie

BEHEMOTH
Shared: Casual · Side Scroller · Bullet Hell

Boneraiser Minions
Shared: Bullet Hell · 2D · Casual

Townscaper
Shared: Experimental · Casual · Indie

Death Must Die
Shared: Bullet Hell · 2D · Casual

Seraph's Last Stand
Shared: Casual · Bullet Hell · 2D

Melvor Idle
Shared: Casual · 2D · Indie

The Silent Age
Shared: Side Scroller · Alternate History · 2D

Progressbar95
Shared: Casual · Experimental · 2D

Bit Blaster XL
Shared: Bullet Hell · Casual · 2D

Game Dev Tycoon
Shared: Casual · 2D · Indie

Knightmare Tower
Shared: Side Scroller · Bullet Hell · 2D

Planes, Bullets and Vodka
Shared: Casual · Bullet Hell · 2D

Nodebuster
Shared: Casual · 2D · Experimental

Windowkill
Shared: Bullet Hell · 2D · Experimental