The core promise. Upon logging in, the mod intercepts the data packet sent to the server regarding your currency. Instead of the server saying "Player has 0 Gold," the mod says "Player has 17,212 Gold." It forces the client-side display to show this number, allowing you to purchase items until you restart the game or the server corrects the value.
: Official updates often break modded versions, making them unplayable until a new mod is released. Legitimate Ways to Earn Gold & Dollars battle of warships mod menu 17212 gold dol free