Requirements: the chests will be received by players level 15+
The main reward is the Patrika Gate (4,200 coins, 1-4 energy, 1-3 pearls every 21 hours, size 8*6, can be placed anywhere)
Each chest can be opened for 9 Summer keys.
There are 3 ways to get Keys:
  1. Completing the quest:
Mysterious disappearance I (3 keys)

Collect 7 Coffee beans (Coffee House, Upgraded Coffee House)
Collect 9 Peacock Feathers (Stationery shop, Upgraded Stationery shop)
Collect 16 Ring cakes (Bakery, Upgraded Bakery)

Mysterious disappearance II (3 keys)
Collect 4 Seals (Administration)
Ask friends for 6 Almond Butters
Collect 4 Pairs of Glasses (Summer House, Upgraded Summer House)

Mysterious disappearance III (4 keys)
Collect 15 Envelopes (Subway station, Upgraded Subway station)
Collect 7 Palettes (from friends’ cities - buildings with a clock or coin)
Collect 14 Amber earrings (Premium cottage)

2. Collect profits from the following buildings:
  • Central Station - 1 key every 24 hours;
  • Paleontological Museum - 1 key every 8 hours;
  • Holstentor - 1-4 keys every 20 hours;
  • Armor - Stiner House - 2-3 keys every 22 hours;
  • Romanian athenaeum - 2-3 keys every 22 hours.
3. Use the sale offer!

Special offer with the Patrika Gate chest event
  • Holstentor: 4,000 coins, 1-4 energy, 2-4 pearls, 1-4 Summer keys during the Patrika Gate chest event every 20 hours;
  • Armor - Stiner house: 4,200 coins, 1-4 energy, 2-3 pearls, 2-3 summer keys during the Patrika Gate chest event every 22 hours;
  • Romanian athenaeum - 4,000 coins, 1-4 energy, 1-3 pearls, 2-3 Summer keys during the Patrika Gate chest event every 22 hours;
  • Museum of Applied Art - 4,100 coins, 3-5 energy every 18 hours;
  • Blue Souk Market - 3,900 coins, 3-4 energy every 24 hours;
  • Bremen City Hall - 3,900 coins, 3-4 energy every 24 hours;