At level 8, you unlock access to special event mines. Events appear every couple of days and have a limited time to be cleared. Weekday events last for two days, while weekend events are active for five days!
 
 
Your goal in the events is not to reach the end but to gather all the hidden keys. The more keys you get, the more rewards you earn when the event is finished!  You don't have to gather all the keys to receive an event reward, though. You get rewards even if you've collected just one key!
 

Event maps are separate from the main mine. Your cards or unlocked bonuses in the main caves don't affect the event levels. Your elixirs are also not available - the event mines have a different type of elixirs. All the blue elixirs and cards gathered during the event - disappear when the event ends. They are not moved to your main mine, nor are they saved for future events.
 

Each event map is a challenging puzzle. Some tactics, time management, and wise use of dynamite are required to beat events successfully.

You can see the keys count at the top of the screen. To check the possible rewards, tap on the keys bar.
 
 
Rewards will be claimed at the end of the event.
But that’s not all, you can get even more rewards! Compete with other players on the event Leaderboard! Check the Leaderboards section of this guide to find out more.