A chest recieved for every buy of 500 Gold Coins. When you open it, you are guaranteed to receive a cashback of 20 Gold Coins. There is also a chance to get the following items:\\n\\nScaly Skin +10\\nSeahorse's Ancient Scroll\\nSea Treasure (3 pcs.)\\nRiding Pet\\nPremium Buff (60 days)\\nGold Coin (10,000 pcs.)\\n\\nIt can't be dropped or exchanged.