Tip: You can use Lunar Magic's Overworld Layer 3 Editing system to edit or create your own layer 3 images (castle bricks, fish, rocks) and apply unique effects per level via the Layer 3 Bypass in the main editor.
1) "Another Mario Hack" is not its name. It was just submitted here with that name, because nobody really knows what its name is or if it even has one, and its name shall be kept as that until the author comes forward because it's what people know it as.
2) This hack is shit and should've never originally passed moderation.
Boo Tower is the only level I can say I actually enjoyed, but there are some Map16 problems with it (as well as the levels with the Yoshi's Island tilesets) and there's an area you can fall down and get permanently trapped. In addition to those Map16 errors, parts of the Urchin Lake level have ground used without real foreground graphics - they're just bluish bricks.
Shyguy Territory had a neat idea for a secret exit location, which is the only good thing about this level. However, where it goes will leave you in wonder. You get to play an unedited Vanilla Secret 3 which exists for no reason, and if you follow that pipe, you get stuck in the Valley of Bowser submap and your only option is to enter a neverending bonus game.
Levels are crammed with artificial difficulty and length: sprites are spammed, munchers are everywhere in the Red Switch Palace as well as a ton of disco shells, and some levels are annoyingly slow with auto-scroll and generators or Magikoopa.
Unedited title screen and intro message. I'm not entirely sure how that works. Custom music, but no edits to the title screen or intro message?
"Patooie Grassland" is a short level that constantly throws that enemy from Yoshi's Island at you. It has a bit of a challenge to it, but it felt pretty bland and uninteresting beyond the custom sprites. Also, that port of Green Hill Zone is...pretty awful. A major problem with this level is the inconsistent "acts like" settings of the wall tiles - sometimes I walk right through and fall to my doom. The jump with the coin arrow is one particular place where this screwed me over. Lastly, I don't like how the patooies are handled in this level. The first instance of them - period - you have no easy way of killing it, because unlike the rest he gives you three goombas...which promptly walk off the edge.
Music breaks in the second level's cave section. The beginning of the second level wasn't very interesting either and consisted of just shy guys and tall guys. I needed to switch to ZSNES here.
"Shy Guy Territory" (the afore mentioned second level) still has that bad port of Green Hill Zone. The level has nothing in particular to make it interesting as over half of it consists of nothing but shy guys. The ending is weird though...why am I suddenly in a random dreary-looking land with dry bones and general castle enemies, while I'm being shot out of nothing at top speed? Back to the level itself, I don't like it a whole lot. It's pretty bland and empty and the spike section seems pretty dumb and is mostly based around waiting for the balloons carrying shy guys to drop them into the gaps between the platforms and the spikes.
After getting another game over by being killed by a fish ambush in "Bill Madness!", I gave up here. The music break in Shy Guy Territory should merit a fixme tag.