Nominate best game series ever

I can throw in Warcraft, as WC3 = uber pwn.

Also, both Half Life games were rated the best game of all time.

Why are we nominating? Are we going to have a vote? Perhaps break down the games into categories and vote on them. Then take the winners and vote on that. Or just randomly divide them up into pairs and have a bracket voting system. Or... just doing it for shits and giggles?