BS Legend of Zelda (SNES) - 'BS' here stands for Broadcast Satellite - this is one of a handful of titles only available for a limited time in Japan as it was broadcast in episodes on a weekly basis. One of these titles was a 'remake' of sorts of the original Legend of Zelda. Fans have cobbled together the episodes, removed the timed events, and changed the visuals so you play as Link and collect Triforce pieces (rather than playing as a Sattelaview mascot collecting crosses).
If you liked the original game, this is a fast and more focused version of it. The map has been truncated, but most of the areas you'll remember are present. The visual upgrade from the NES reminds me of Super Mario All-Stars, something I would have loved to see for more games.
You can't buy this game, and Nintendo doesn't seem to care that fans have put so much work into making it functional long after the last live broadcast, so go get it and have fun! http://bszelda.zeldalegends.net/