这个有可能，shuffle！本身的bg包就有几个散件在文件夹下。游戏本身的.ini也有如下内容：
[Path]
CD-ROM = Data
System = System
Data = Data
Script = Script
Graphic = Graphic
Bg = Bg
Sg = Sg
Visual = Visual
Sound = Se
Bgm = Bgm
Se = Se
Voice1st = Voice
[PackFile]
System = system.pac
Data = data.pac
Script = script.pac
Graphic = graphic.pac
Bg = bg.pac
Sg = sg.pac
Visual = visual.pac
Sound = se.pac
Bgm = bgm.pac
Se = se.pac
Voice1st = voice.pac
Voice2nd =
以上纯属菜鸟的无责任猜测
