Soo as I metioned before thanks to Moritz from Kult Cover Disks now we againg have an access to the demo versions of the game. :)
Machines_1999-01-14.zip
Most common and earliest known version of the demo.
Machines_1999-02-19.zip
Rarest version of the demo. Featured on the (Itaian) PC Gamer CD #041 B.
Machines_1999-02-23.zip.001
Machines_1999-02-23.zip.002
Largest demo. Featured on the PC Games 05/99, PC Player 06/99 B and GameStar 06/99.
PS. If you have problems with the installer try using Uniextract:
Old version 1.6.1
New version 2.0