I saw this on IGN a few days ago and it got me wondering, my first thought seeing the screens and videos was that it looked like a fan made game. After much research I found that it is indeed a real Nintendo made game never before released outside Japan and currently is not available even there. To spare this from being a super long post I'll just tell you all to google BS-X or Satellaview which is a relatively obscure add-on for the Super Famicom. One of the games released for it is, as I've to titled the thread, BS The Legend of Zelda: The Ancient Stone Tablets.
Here is a link to IGNs story about it:
A Link to the Past's Long Lost Sequel
Now being that we here at WiiHacks do not support piracy I, just like IGN, will not be detailing where to get the game or how to use it...but I will say it is possible to play the game via emulation.
So how many people out there never heard of this? I think it looks like an great game and hope Nintendo one day releases it on the Virtual Console (as unlikely as that is).