With the purchase of the pre-order of The Legend of Zelda: The Windwaker, a "hard-type" version of The Legend of Zelda: Ocarina of Time was included. It was titled Master Quest. It was the same story with different dungeons, usually harder.
I took this concept and adapted it to The Legend of Zelda: A Link to the Past. Using Hyrule Magic, I have changed the dungeons around, making them harder than they were before, and I have also toughened up bosses by filling their arenas with obstacles, usually dangerous ones, or ones that will impede your immediate attack on the boss. (Look forward to the battle with Business Man Arrghus!)
The .zip file contains bonuses like changing The Legend of Zelda: A Link to the Past's Link to The Legend of Zelda: Ocarina of Time's Link!
(NOTE: The readme says that there's only two holes that lead to a debug room. I had forgotten about another hole, in the sanctuary that may also lead to a debug room. Either way, these holes are trivial and the player must be brain-dead to fall into them since the holes only appear at very safe places)Relevant Link: