15 Million Download Campaign

The 15 Million Download Campaign is an event launched for the game's 16 Million Downloads on June 4, 2013.

Players receive bonuses by logging-in, and some extra bonuses depending on their played time (Crystal Sets and Scarlet Coins).

By sending push notifications to their allies, players are also able to collect Copper DL Coins, Silver DL Coins and Gold-DL Coins, to be used in Celebration Pacts.

Sending Notifications
On the main screen, click the info box, then go to 15 Million DL Campaign details. On that screen scroll down there should be a red tab that says "Details" with the DL coin description above it: click that. Scroll down and you get 5 messsages to send to your allies.

You will get Copper DL Coins most of the time. Every 15th Time you will get silver coin and on a 100th time you will get Gold Coin.

Considering that event lasts 27 days in total it is possible to get 9 Silver DL Coins and 1 Gold DL Coin.