Well, after reading over the rules, I see that I shouldn't get in trouble for resurrecting the progress thread like this.
The five-world demo was also removed. Again, it was due to minor problems such as cutoff. I'm still working on this hack, and intend to have it beta tested before the next release to avoid another removal.
As of the last post and rejected demo, a lot has been added to this hack. Before starting work on the hack's 6th world, I learned how to insert custom music using Romi's AddMusic. All worlds have at least one custom song unique to them, and most have two or three songs. Some levels, however, still use vanilla music.
I also added fake HDMA gradients to all daytime levels set outside.
Here are some screenshots.
Here's a level in Pipe City. It's a water level. This world itself is what made me decide to learn AddMusic and add custom music to the hack. There are no fitting OW tunes in SMW for Pipe City's overworld, and the water levels, in my opinion, wouldn't feel quite right without Bubble Man's theme playing in the background.
The OW to Winter Valley, my hack's 7th World. As the name implies, it's an ice world, but only a small handful of levels are actually slippery.
The first level of Winter Valley. The little penguins are Despari Scuro's Mr. Bouncy sprite, meaning they'll bounce you if you try to stomp them. The idea to use the sprite and make it a penguin came from the Super Mario 4 Game Boy pirate, as did certain aspects of the level's design.
Here's Metal Kingdom 1. That's Imamelia's Fire Pillar sprite.
Those are just Thwomps with different graphics to make them fit Metal Kingdom's industrial theme. That conveyor moves, making it a bit more difficult to avoid getting hit. Yeah, this bit's inspired by Metal Man's stage. Heck, the level even plays Metal Man's theme.
"Fortunately, I have a delicate lock-picking technique" *blasts doors open*
-Optimus Prime - G1 - Day of the Machines