This level is a cave with some toxic stuff flowing around. BG2 palette 8 gave me the idea, though I ended up recoloring the waterfalls in palette 20 instead. I did the animation via SPASM so I didn't actually edit anything in the palette.
Here's a purely visual preview
The orange gradient is also kinda neat, but I dunno
I was thinking of doing something with the muddy buddy at some point, though it might not work that well in world 1. Maybe in a bonus room.
(also I may or may not use fuzzies for the perfect 420 level, though the slopes mess up)
oh my god it's been a year. Anyway, I restarted again because I didn't like what I was doing. It wasn't very solid, and I have better ideas now anyway.
Now featuring flatbed ferries. Also Jean de Fillet, because he was like in every other level in Yoshi's Island. Also the green water depletes the star timer (totally not jumping to SNN's level code). Fuzzies will come later, along with other ghosts/skeletons.
Will post a playable patch of like half the level soonish, unless I finish it all by then.
Patch link, plays up to the first middle ring. Also, left a door to a bonus room at the end, which will be accessible from not too much later into the level.
Can you find the other very sekrit bonus room????
Also ignore some minor graphical glitches and the colors on level init (spasm bug).