kratz00's Wiki

The game data files are inside a Inno Setup installer:

install/instbin/software/setup-1a.bin: data
install/instbin/software/setup-1b.bin: data
install/instbin/software/setup-1c.bin: data
install/instbin/software/setup-1d.bin: data
install/instbin/software/setup-1e.bin: data
install/instbin/software/setup-1f.bin: data
install/instbin/software/setup-1g.bin: data
install/instbin/software/setup-1h.bin: data
install/instbin/software/setup.exe:    PE32 executable for MS Windows (GUI) Intel 80386 32-bit

They are part of a Inno Setup installer.

strings install/instbin/software/setup.exe | grep Inno

InnoSetupLdrWindow
Inno Setup Setup Data (5.2.3)
Inno Setup Messages (5.1.11)
    name="JR.Inno.Setup"
<description>Inno Setup</description>

There is a dedicated tool to extract the game data files: http://github.com/d0k/ednaunpack (Java)
There is a generic tool to extract Inno Setup installers: http://innounp.sourceforge.net/ (Borland Delphi)

worth reading

official patch