I suppose I should have given a few more details...
It's tough to say exactly how close to completion it is, but here's a quick rundown of the games status:
-The game engine it self is finished, there is still plenty of tweaking and optimizations to be made, but the system is there.
-I have nearly all of the sprites/tiles, except for some of the bosses (for which I may need the help of you guys)
-A little more than half of Link's items are coded and finished.
-A little less than half of the enemies are coded and finished. (No bosses are finished)
-I still need to add a save game feature. This will probably be one of the last things that I do.
-There are still non-gameplay things that need to be finished, such as an opening sequence, rolling credits, etc.
-I have to add animated backgrounds (moving water, those dancing flowers, etc)
What's different in MoH:
-Obviously the biggest change to the game is the graphics.
-Gameplay more closely matches ALttP as well. For example, Link can move diagonally, perform the sword spin, pick up and throw objects (including bombs).
-In LoZ, the camera only moved whenever the screen changed. In MoH, there are areas where the camera follows Link, but it performs the "classic scroll" when he reaches the edge of the map, like in ALttP.
-The overworld is now divided into different regions, and each region has it's own music, rather than playing the same theme throughout the entire overworld. Likewise, the dungeons now have their own individual themes, both musically and graphically.
About the screen resolution:
It used to be half the size that it is now, but I really wasn't happy with it. I much more prefer the way it is now because it really makes the entire overworld feel MUCH larger and it gives me a little more freedom when creating maps because I don't have to try to cram things into a smaller area. You might think this would cause a problem with having to travel a longer distance, but Link moves fairly quickly, so I don't think that will be a problem.