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.