Thread:2A02:2F08:C408:AB00:D72:1800:41D6:F9EC/@comment-157.42.107.114-20180829122340/@comment-31479589-20180829133616

"Promocode is the code for receiving in-game currency. You can get it ONLY by winning in any competition held in our groups in social networks (FB and Twitter). All information on the timing of the competitions, conditions, rules of participation and prizes you can get in the following groups:

Facebook Twitter"

Taken from Nekki Support. Don't forget to keep eyes on their VK as well.