Been a long time since I've voted in one of these. Let's get to it!
Twilight-Prince: While it's not complicated layout-wise, it really doesn't need to be. Your entry nails what it sets out to accomplish: it sets the mood for what seems to be an interesting location. The place really looks ancient and forgotten. The greenery gives the place some nice color and reinforces the theme, and the destroyed tile flooring is interesting and a nice touch. I don't know that the grass should be as green as it is for an indoor area - maybe add windows to let more natural light in that hits parts of the interior, which I think would add even more to the ambiance you're going for. I think the only other thing I'd try is to use a different color for the light at the entrance, though maybe what you've gotten is best. I always have to try it out myself to be sure.
Rocks4Free:
I can feel the vibe you've got going on in your entry. Nice details with some of the rubble and potholes to set the mood, and I particularly like the alley between buildings. The roads edges are maybe a little too smooth for what I think you're going for... maybe add some cracks or missing pieces from the edges?
Demonlink: Certainly the most complex layout of the bunch. Some of the tiles are placed a little haphazardly, such as the stone tiling. The stone perimeters around the water overlapping those stone tiles doesn't really work for me. I like that you have a bridge across the water, though maybe it's a little flat. The water next to the flowers on the right side of the screen ends a little abruptly. On the other hand, I like the layout itself.
Joelmacool12: The colors are just a little too bright for my taste. It would also be nice to use different different shades of green for the grass, bushes, and trees so that it doesn't all run together.
Bagel: I like the shading on those trees, and the general colors you're using. The Moblins a re maybe a little muted. The trees are varied enough to not just look like a bunch of copy-pasting, but not so different that it doesn't look like they'd actually grow that way.
Nice screens all around, but ultimately, my vote goes to Twilight-Prince.