How do I efficiently open chests in Game of War for free?

How do I efficiently open chests in Game of War for free? I know I can use the item that opens 500 at once, but those often cost gold.


Solution 1:

You can open all chests for free once you reach VIP Prestige 12. You can then open all of 1 specific chest for free. Once you reach VIP prestige 15, you can then open all chests for free!