Ocarina of Time, arguably the best game ever created, was groundbreaking when it came out on November 23rd, 1998, and not much has changed since. For the first time, you could see Hyrule in all its 3D glory, and it did not disappoint. Spanning varied terrains from forest to mountain, from lake to desert, with 8 dungeons spread between them and numerous subquests along the way, it was massive on a scale previously unseen. And, if you were stuck, you could go to Lake Hylia for some fishing, or go searching for one of the hundred Golden Skulltulas hidden around the world.
In February 2003, it was rereleased for the Gamecube as part of the Wind Waker preorder deal. Included on the disc was the original Ocarina of Time and a copy of the unreleased URA Zelda for the 64DD under the title 'Master Quest'. Master Quest featured remixed dungeons and puzzles, designed to increase the game's difficulty.