Download now Tro de Bac, the best app for the Fallas de Valencia 2018. You can throw firecrackers at any time, be you faller or fallero. Make noise without wasting gunpowder, give the play to the regional anthem and exploit as many firecrackers as you want for free. The deafening noise guides us! Why bac tro is the best of the fault apps in 2018?