HNS councillors in the City of Zagreb assembly, Jozo Rador, Alenka Kosisa Cicin-Sain and Morana Palikovic-Gruden, were 'contestants' in the quiz show while the party chief Vesna Pusic and another party top official, Radimir Cacic, were applied for the call-a-friend lifeline.
Zagreb citizens, who were interested in the HNS game, were called to attend the event which was held in the concert hall 'Vatroslav Lisinki'.
The topic of decentralisation is one of the four planks of the HNS programme which this opposition party is going to present to voters in its campaign before the next parliamentary elections.
The other three main planks are the party's vision of a fair society, a new form of sovereignty, and accelerated economic growth.