Some of the most precious rewards are hidden in the Bingo Box lottery that you can access from the Special Delivery screen (Bingo Box becomes available upon reaching level 30).
Earn event coins in Operation E by completing various daily tasks or simply purchase the coins at the in-game store. You will need those to open cells in the square.
- Every cell contains a valuable prize;
- There are also some special Lucky Cells: finding them will grant you an extra Rare or Legendary chest;
- Opening all 25 cells grants you a guaranteed Legendary chest.