http://www.romhacking.net/hacks/1303/
It's an excellent hack of Zelda 1, created by one Lord Steak, but a glitch in the boss of Level 3 (it was an unbeatable fire instead of an enemy) kind of broke the game. After several years and no bugfixes, I fixed it myself.
It's now possible to beat Level 3, and thereby the whole game. Enjoy.
Shin Zelda Densetsu -- Bugfixed
I made this overworld map. But it is incomplete. I forgot to write down the items for level 9. And I couldn't find an item in level 3.