Ok thanks for your answers
Another little question: Do i have the possibility to have only the app icon on my application folder? (and not the folder with all these files)
Not currently, no. However, one of the forum members had done
this with
Samorost2...but there hadn't been any .app file up until then, as it was similar to how
Samorost1 is packaged.
One suggestion is that if the look of the generic folder icon bothers you, simply copy and paste the Machinarium.app icon onto the icon of the Machinarium folder.