Requirements: level 15+

In this event, you open chests and receive guaranteed prizes from each of them.

There are 3 types of chests. Each type of chests requires a different number of keys and brings rewards on a random basis.

1. Standard chest. You need 9 keys to open a chest and you can open 45 standard chests in total. One of these 45 chests will bring you the main reward.
 
 
2. Enhanced chest. You need 18 keys to open a chest and you can open up to 30 enhanced chests. Enhanced chests contain fewer decor compared to standard chests. One of the 30 chests will bring you the main reward.  The chance to get the main reward is higher in enhanced chests than in standard chests. 
 
3. Super chest. You need 27 keys to open a chest and you can open up to 15 chests. Super chests contain no small decor and more buildings sold for seasonal currency and superbucks in the game shop compared to standard and enhanced chests. One of the 15 chests will bring you the main reward. The chance to get the main reward is higher in super chests than in standard chests.
 
It is up to you to decide what chest to open: standard, enhanced or super chest. 
You do not have to stick to one type of chests, you can open any chest you wish.

IMPORTANT! YOU CAN ONLY GET THE MAIN REWARD ONCE!

So, if you, for instance, opened a super chest and received the main reward, you will not be able to receive it again no matter how many standard chests and/or enhanced chests you open.
As soon as you receive the main reward in one of the chests, the possibility to obtain it in any further chest becomes blocked.
You can receive the main reward by opening any type of chests, but you can only get it once during the event.
 
The main reward is Notary Filippov's Mansion, size 9x7, can be placed anywhere
4200 coins, 1-3 energy, 1-3 pearls every 24 hours

Each chest can be opened with Keys (9, 18, or 27)
 
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

Eco-Fair I
Collect 10 spools of thread (Textile Factory when collecting wool, tulle, denim, printed cotton, linen, Venetian lace, silk, velvet, lace; Upgraded Textile Factory when collecting wool, felt, cashmere)  
Collect 10 saws (Colonial House, Upgraded Colonial House)
Collect 2 pins (Fashion Boutique, Upgraded Fashion Boutique) 

Eco-Fair II
Collect 10 potions (Pub, Upgraded Pub)
Ask friends for 5 cups of camomile tea
Collect 12 freeze gel tubes (Convenience Store, Upgraded Convenience Store)

Eco-Fair III
Collect 27 towels (Recreational Cottage, Upgraded Recreational Cottage)
Collect 6 bars of soap (Cosmetics Boutique)
Ask friends for 5 paintbrushes

2. Collect profits from certain buildings:
Supertanic: 1 key every 24 hours
Windmill: 1 key every 18 hours
The Hay House: 2-3 keys every 24 hours
Halifax City Hall: 2-3 keys every 24 hours
Blue Church: 2-3 keys every 22 hours
 
3. Purchasing keys from a special offer
 
Unique offer: Halifax City Hall, size 10x6, can be placed anywhere

 
4000 coins, 1-4 energy, 2-3 keys during the promotion, 1-4 pearls every 24 hours