How 72-Hour Challenge (December 2017) works

• This is a "flipping cards" island. If you can't have enough coins for all the puzzles, you can instead only spend coins at the monster you want.
• Recently, these flipping cards events will re-open all the puzzles right before the event expires. You have the opportunity to collect all the remaining rewards on previous puzzles with spared coins.
• Coins are collected by how much amount you earn in game activities (collect gold, food, win pvp, breeding), depends on what level you are.
• Your card rewards are RANDOMLY generated in server-side. It won't be changed. When you claim the current card, the next reward will be generated also, RANDOMLY. The monster card will only be generated when the chance is above 0%.
• Cards shuffling is just animation, it does not include the correct position of the rewards. It doesn't matter which card you choose, the result is the same as the current card is already defined as you claimed the previous card. So, trying to keep the track of the card during the shuffling won't get you the card you want.