No game can be the best game of all time, subjectively or objectively because none of us have played every game...that's me being a smart aleck dickhead.
Now, my favoirte games of all time...
1.) Dragon Quest VIII: The Sky, The Ocean, The Earth, And The Cursed King (Yes, that's the full Japanese Name...sad really)
2.) The Legend of Zelda Ocarina of Time
3.) The Legend of Zelda: Breath of the Wild
4.) Xenogears
5.)Final Fantasy VII
6.) Super Mario 64
7.)The Last of Us
Those are just off the top of my head.