By decrypting the message and following the rules you reveal, or just have fun!
Hint : People used to love playing Angry Birds in ancient Rome.
Decoded by : @oh_la_love, @27_hope, @mowahed23, Mohieddine Abd-kader, @zirconias (competition always open closed).
Winner : Mohieddine Abd-kader, http://mitgux.com/