Promotion is occurring every week in March. You have to play a specific slot game that is participating in the promotion, you have to have at least 100 played rounds, and all players that that have a net loss of at least 2.500 RSD can expect a 20% CASHBACK!
In other words, the playthrough for regular bonuses is 30 times, while the CASHBACK bonus will have to be wagered only once so it could be converted to real money.