how to get free crystals

yveltel 6 years ago updated by MSI 4 years ago 5
It is money to get guns and hulls
and get it by killing tanks

it is money in tanki online to buy turrets, hulls and other things

Yes, Crystals are the currency of the game and you need them to purchase items in the garage. More info can be found here: What are crystals and how to earn them?