Crystals

This kind of resources are the premium in-game currency. They can be obtained by paying with real money or completing tasks in game and can used to advance players' bases. It is represented by a purple diamond like amethyst

Obtaining
The easiest way of gaining large amount of crystals is to buy them in the Shop with real money. Purchasing crystals will also get significant additional bonuses in various ongoing Events in game. But, don't worry for free players, amounts of crystals can also be obtained for free through :


 * 1) Daily Trials
 * 2) Gift Codes
 * 3) Newbie Reward and invited by friends
 * 4) Completing some Achievements
 * 5) Clearing obstacles
 * 6) Seasonal Challenges
 * 7) Limited time and temporary Events
 * 8) Opening soul chests
 * 9) Facebook Events
 * 10) Reaching certain ranks point in Arena
 * 11) League Monthly Card
 * 12) Begin the top League weekly
 * 13) Reporting Hackers with the screenshot and report reason

Spending
Players can spent it for various events to


 * 1) Buy Builders Stations and some various decoration in Shop
 * 2) Speed up producing for resource buikdings
 * 3) Speed up or finishing Hero's healing, queue of training troops & weapons
 * 4) Finishing the building and hero progress upgrade
 * 5) Fill up the storages
 * 6) Adding chances for campaign challenges and arena glory
 * 7) Boosting some statue (except Server C)
 * 8) Use More, Get More
 * 9) Temporary events
 * 10) Refreshing and spin on Crystal Lottery and Crystal Shop
 * 11) Buying some resources on Mysterious Shop every Monday & Tuesday
 * 12) Buy hero and other resources in Shop
 * 13) Adding Shield for protecting bases in various days

Purchasing