Puzzle books can be traded by puzzle coins collected in specific slot games.  Each puzzle book includes five puzzle pieces. 

There are five kinds of puzzle collections. The pieces of green, blue, purple and red puzzle collections can be obtained from puzzle books of the same color. The pieces of golden puzzle collections can be randomly obtained during the trading process.
  1. Coin rewards can be received when the number of puzzle pieces reached a certain number.
  2. A specific number of free games with sticky Wilds are going to be triggered when a collection is completed by enough puzzle pieces.
  3. Duplicate puzzle pieces will award additional prizes.
Note: The maximum number of puzzle coins is 1,500,000.