1. The Legend of Zelda: Ocarina of Time (N64)

This game was a masterpiece.  it gave us young link and adult link, in a world of time travel.  For the time, it was a great new 3d landscape that had only been done with great success by Mario.  The  music was the key to this game, as it was a main point.  Add to this the vast amount of sidequests, which really makes a game.  Replay value can go a long way in making or breaking a game.  The worry for many was that enhanced graphics would decrease the value of gameplay, however games like Mario 64 and Zelda 64 did not let their audiences down.