In order to increase the level of the guild, its members need to make donations (exchange their in-game items on the guild experience points).In order to donate, click the "Level up" button on the "My guild" screen. Donations can be made in:
- gold coins
- blue orbs
- tears
- emeralds
- magical ingredients.

On the contribution buttons, you see the amount of experience that your guild will get, the kind of resource that you can donate and its amount.
If you have made too many donations, the game will offer you to watch an ad, after which you can make contributions again.

The amount of experience that you added to your guild by donating is displayed on the "My Guild" screen, where your delta is usually shown. To see your delta in the guild battle, you have to switch to the "Guild Battle" tab.

In total, there are 45 guild levels in the game: 40 regular levels and 5 bonus ones.
By levelling your guild up, you increase passive bonuses (bonus to the rating of stolen/retrieved gems, bonus to the rating of gems that were mined, etc.) and open new items in the guild Arsenal store. In addition to the fact that the number of items in the Arsenal grows when the guild levels up, the price for them decreases.

Also, the higher the guild's level is, the more participants can join it. Now the maximum number of members in the guild can be 30.