I used linux
Knoppix8.1 (32bit) , Linux kernel 4.12.7 , LXDE desktop

WINE 2.0_rc6 ("as is")

to run / install the setup.exe
( setup_pax_imperia_2.0.0.12.exe )

-

WINE settings::
win.version: WindowsXP
Devices/Drives:
D:
/media/sda5/GOGgames
local HDD
lwd
Graphics:
emulate virtual window
640x480

-

OR boot Knoppix with
screen=640x480


I run game with WINEstarter
Pax Imperia.exe
runs very very stable
on my old laptop from 2006.


Cheers!