Wait for the offer to start and for the information about in to appear in the "News" section of the website.
Go to the top-up page.
If the offer has started and your account meets its conditions, you will see a promotional offer near the top-up amount.
Top up your account while the offer is active. The bonus will be credited to your game account along with the original payment.
More about the offer conditions
You can get the bonus only if you top up on the special page and only for a fixed amount, participating in the promotion. You can find more information in the "News" section or the official website's top-up page.
You can get gifts for each set of Kredits only once during the offer.
Bonus Kredits can be used on the Marketplace or in-game. You can also spend them to change your character's or a clan's name.