The VIP system is a way to earn additional max energy, bonus gold on marked purchases, and high level perks. 

VIP points are earned with every purchase made using real money. If you are unsure if a purchase will earn you VIP points, look for a note on the purchase that says +number VIP Points. If there is no such note, then you will not earn VIP points for that purchase.

There are 10 VIP tiers with increasing rewards, additional max energy and exclusive VIP content. Your amount of VIP points determines what VIP tier you are in. 

You will earn bonus gold in your purchases depending on what VIP level you are in when the purchase is made. It is important to note that only the bonus from VIP tier you are in at the time of the purchase will be applied to that purchase, the bonus from the tier you will be in after that purchase will not be applied to that specific purchase.