Requirements: level 15+
In this event, you can open chests and receive guaranteed prizes from each of them.
There are 45 chests in total and rewards drop on a random basis.
 
 
The main reward is Carson Mansion, size 6x8, can be placed anywhere
 
Every 24 hours: 4200 coins, 1-3 daffodils/pearls, 1-3 energy


Each chest can be opened with 9 Spring Keys
There are 3 ways to get the Keys:

1. Completing quests
Key quests will appear one after the other in the menu on the left side
 

Back again I
Collect 10 microphones (Pub, Upgraded Pub)
Collect 7 hamburgers (Bistro, Upgraded Bistro)
Collect 9 nails (in friends' cities) 

 Back again II
Collect 7 carabiners (Subway Station, Upgraded Subway Station)
Ask friends for 6 repair kits
Collect 20 pencils (Stationery Shop, Upgraded Stationery Shop) 

 Back again III
Collect 21 boots (Shoe Shop, Upgraded Shoe Shop)
Collect 17 lucky horseshoes (Convenience Store, Upgraded Convenience Store)
Collect 22 satin flowers (Premium Cottage) 

 
2. Collect profits from certain buildings:
Lighthouse: 1 key every 24 hours
Scout Camp: 1 key every 12 hours
Church of St. Mary Magdalene: 2-3 keys every 24 hours
Skyscraper "American Radiator": 2-3 keys every 24 hours
West Norway Museum of Decorative Art: 2-3 keys every 24 hours
 
3. Purchasing keys from a special offer
 
Unique offer: West Norway Museum of Decorative Art, size 9x5, can be placed anywhere
  
 
Every 24 hours: 4000 coins, 1-4 daffodils/pearls, 1-4 energy, 2-3 keys during the promotion