Games like 星火
Games like 星火 include Escape From Duckov, Hero Siege, Enter the Gungeon, Vampire Survivors, and BALL x PIT. We matched them by the tags players give 星火 on Steam (Adventure, Action, Management, Action Roguelike, and Action RPG): closest matches first, and among equally close ones the better-known games.

Escape From Duckov
Shared: Adventure · Action · Shooter

Hero Siege
Shared: Action RPG · Action Roguelike · Action

Enter the Gungeon
Shared: Action Roguelike · Bullet Hell · Pixel Graphics

Vampire Survivors
Shared: Action Roguelike · Bullet Hell · 2D

BALL x PIT
Shared: Action · Action Roguelike · Bullet Hell

Halls of Torment
Shared: Action Roguelike · Action · Bullet Hell

Nuclear Throne
Shared: Action Roguelike · Action · Bullet Hell

Relic Hunters Zero: Remix
Shared: Action · Adventure · Action Roguelike

Dead Cells
Shared: Adventure · Action Roguelike · 2D

20 Minutes Till Dawn
Shared: Action Roguelike · Bullet Hell · Top-Down Shooter

Terraria
Shared: Adventure · 2D · Pixel Graphics

Skul: The Hero Slayer
Shared: Action · Action Roguelike · 2D

Death Must Die
Shared: Action Roguelike · Action · Bullet Hell

Heroes of Hammerwatch II
Shared: Action Roguelike · Action · Action RPG

Archvale
Shared: Adventure · Action · Action RPG

Noobs Want to Live
Shared: Action · Bullet Hell · Action Roguelike

Tiny Rogues
Shared: Action Roguelike · Bullet Hell · Top-Down Shooter

The Ascent
Shared: Action · Top-Down Shooter · Shooter

Nordic Ashes: Survivors of Ragnarok
Shared: Action Roguelike · Action RPG · Bullet Hell

Moonlighter
Shared: Action Roguelike · Management · Adventure

UnderMine
Shared: Action Roguelike · Action · Adventure

Blazing Beaks
Shared: Action Roguelike · Action · Top-Down Shooter

The Last Stand: Aftermath
Shared: Adventure · Action Roguelike · Top-Down Shooter

Broforce
Shared: Action · 2D · Pixel Graphics