Hi, my Kirby 64 will not save. I thought that I simply replace the battery, but it has none :( How can I fix it?

Super Mario 64. I love the N64, its a tied with the NESfor my 2nd favorite system, behind the Wii. It has many great games, but I personally think that Ocarina Of Time has to be the most overrated game I have ever played, even though its in my top 10 favorite games. Its a really great game and all, but in my opinion there are better (Mario 64, Galaxy 1 & 2, Mario 1 & 3, LoZ NES...). I just think it doesnt deserve title of "best game of all time".