Requirements: the chests will be received by players level 15+
Main reward is the Dresden Opera House (3,500 coins, 1-6 energy, 1-4 glass baubles every 20 hours, size 7*9, can be placed anywhere)
Each chest can be opened for 9 Ice keys.
There are 3 ways to get Keys:

1. Complete the quests:
Spontaneous Journey I (3 keys)
Collect 21 Envelopes (Subway Station, Upgraded Subway Station)
Collect 22 Invitations (Stationery Shop, Upgraded Stationery Shop)
Collect 13 Inks. You can get 3 items each time (School, Valley School)

Spontaneous Journey II (3 keys)
Collect 28 Handbands (Mansion, Family House, Colonial House, Upgraded Colonial House)
Collect 29 Pairs of Shoes (Shoe Shop, Upgraded Shoe Shop)
Collect 17 Ties (Silk - Textile Factory, Upgraded Textile Factory)

Spontaneous Journey III (4 keys)
Collect 26 Take-out boxes (Wok Cafe, Upgraded Wok Cafe)
Collect 17 Strawberry Cocktails (Pub, Upgraded Pub)
Collect 7 Olives (Family Restaurant, Ranch, Upgraded Ranch)

2. Collect profits from the following buildings:
  • Bauble Workshop - 1 key every 8 hours;
  • “Amsterdam” Hotel - 2-3 keys every 20 hours;
  • Hofkirche - 2-3 keys every 18 hours;
  • Wightwick Manor - 2-3 keys every 22 hours;
  • Raichle Palace - 1-3 keys every 20 hours;
  • Central Station - 1 key every 24 hours.
3. Use the sale offer!

Special Offer with Dresden Opera House chest event


Hofkirche: 3,700 coins, 2-4 energy, 2-3 glass baubles, 2-3 ice keys every 18 hours + 75 marathon points one time when buying;
Wightwick Manor: 4,100 coins, 1-4 energy, 2-3 glass baubles, 2-3 ice keys every 22 hours, 75 marathon points one time when purchasing, size 10*7, can be placed anywhere;
“Amsterdam” Hotel: 3,300 coins, 2-4 energy, 1-2 ice keys every 20 hours  + 75 marathon points one time when buying;
Old Washington Post: 4,100 coins, 1-3 energy, 1-3 glass baubles every 20 hours, 36 ice keys, 75 marathon points one time when buying;
Raichle Palace: 3,700 coins, 2-4 energy, 1-3 glass baubles, 1-3 ice keys every 20 hours.