Rome

I heard some story about Rome. I heard that, before becoming famous the Rome city was ruled by many kings. But they can't rule it longer. Because the king who was about to rule Rome he can't rule it so long. Another king slaughtered him and seated in the kings place. Then This king also killed by some other kings. I don't know this is a true story or not but i was very surprised to know that there were 65 kings who fought for the Rome and all are being killed by themselves.