Hack instructions:
1 - This method needs to click 'Follow twitter', 'like facebook' button. so if you already clicked that and the button is gone, then i recommend to delete app and reinstall it.
2 - If you didn't click those buttons, you can keep your previous stats.
3 - Terminate the GBOD app from tasks.
4 - Unpack the hack to GBOD app directory using file explorer programs like ifile or ifunbox.
5 - IMPORTANT! DISCONNECT ALL INTERNET CONNECTIONS BEFORE LAUNCHING THE GAME. (Needed only for the 1st time.)
6 - Click like Facebook and follow Twitter buttons in the store menu, and get coins and gems.
7 - After you got all the coins and gems, you can reconnect your internet connection.