The Ocarina of Time. Obviously, you can't beat the game without it.
ocarina. can't do proceed without ocarina OF TIME
I chose the Ocarina of Time simply because it is an absolute necessity in almost everything important in the game. It also is a multi-use item for a variety of situations, and you can't advance or complete the game without it.
Many of the items listed in the poll can be replaced with something else that can just as effectively get the job done. I stand with my choice, the Ocarina of Time, as it is the most used and useful component in the game.
I chose the Ocarina of Time not because you can't beat the game without it, but because it makes traveling to dungeons a whole lot easier.
For example, the Spirit Temple. I wouldn't want to go through the desert again. That part was annoying to do.
So I believe being able to warp to dungeons makes the Ocarina of Time the most useful item.
The Ocarina of Time. Obviously, you can't beat the game without it.