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.
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 Art Academy of Latvia, size 8x7, can be placed anywhere
Every 24 hours: 4200 coins, 1-3 pearls, 1-3 energy
Each chest can be opened with 9 Summer Keys
There are 3 ways to get the Keys:
1. Completing quests
1. Completing quests
Key quests will appear one after the other in the menu on the left side
Handle the Lightning I
Collect 7 screw wrenches (in friends' cities)
Collect 9 fire extinguishers (Water Tower, Upgraded Water Tower)
Collect 7 reinforcements (Cargo Port)
Handle the Lightning II
Ask friends for 6 repair kits
Collect 20 pencils (Stationery Shop, Upgraded Stationery Shop)
Collect 21 jugs (Bakery, Upgraded Bakery)
Handle the Lightning III
Collect 17 valves (Premium Cottage)
Collect 22 pistons (Shoe Shop, Upgraded Shoe shop)
Collect 10 spools of thread (when you collect wool, tulle, denim, printed cotton, linen, Venetian lace, silk, velvet, lace from Textile Factories; when you collect wool, felt, cashmere from Upgraded Textile Factories)
2. Collect profits from certain buildings:
Supertanic: 1 key every 24 hoursWindmill: 1 key every 18 hours
Round Church: 1-3 keys every 16 hours
Holyrood Palace: 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: Holyrood Palace, size 10x9, can be placed anywhere
Every 24 hours: 4000 coins, 1-4 pearls, 1-4 energy, 2-3 keys during the promotion