Crystals

Crystals are premium currency in the game. They are used to buy gold, upgrades, and more!

1. Piggy Bank
This is a piggy bank. When it pops up, you can tap crystals in the mine to fill the piggy bank. Then, you can buy 300 crystals for $1.99 USD. Hurry, because you only have 24 hours to buy it or it will crash and you will lose the crystals!!!



2. Daily Gifts
Everyday, you can go to the shop and collect your bonus. Don't miss a day, or your reward will be reset. The higher the streak is, the more crystals you earn. After day 5, your reward will reset. So play the game daily!!!

3. Chests
You can watch an AD to earn 2 crystals by tapping the purple chest on the left side!!!

4. Shop
You can purchase crystals in the shops for a lot of crystals!!! Spin the wheel to earn double crystals whenever you buy them!!!

Egor
Egor, also known as Devourer Egor or Monster Egor, is a monster that randomly appears in your mine. Egor bewitches all of the boosters and minerals in the mine. To get rid of him, you can either wait 2 hours or spend 20 gems. It no longer exist in the game.

Upgrades
You can buy upgrades that make your drilla even stronger. These upgrades can cost either gold, or a small amount of crystals. All of the upgrades, except for the temporary ones, are permanent.

Gold
Crystals can be exchanged for gold in the shop.

Minerals
Minerals can be bought on the Storage screen. Useful for motor recipes and the drill.

Tower Speedup
Tired of waiting to build a tower? You can skip the tower's cooldown of 2 hours for 50 gems.

Lottery
You can spend 15 crystals for a lottery spin. There are bonuses to earn and upgrade. The best way to use this is by watching ADS!

More To Come!!!