Hex cheat:

     Money  is  as important as missiles in Empire's awesome tank game
so  here's how to get some for free. Remember to back up program files
before  start making changes as if something goes wrong - You're a bit
gutted!!!

     Create  a  new  tank  commander. Quit the game and then use a hex
file-editor to edit the file PLAYFILE.DAT. Search for the name of your
commander  and  after  seven 0s you find the hex code 08 7C 15. Change
the  15 to FF and you now have more than enough money to buy plenty of
tanks.