The game data files are inside a Inno Setup installer:

<code>
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
</code>

They are part of a Inno Setup installer.

strings install/instbin/software/setup.exe | grep Inno
<code>
InnoSetupLdrWindow
Inno Setup Setup Data (5.2.3)
Inno Setup Messages (5.1.11)
    name="JR.Inno.Setup"
<description>Inno Setup</description>
</code>

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==

http://wiki.github.com/d0k/ednaunpack/patch-11

http://wiki.github.com/d0k/ednaunpack/filelist

== official patch ==
http://www.daedalic.de/download/eba_patch_1_1.exe