Wow this looks awesome, the programming is all very nice!
The only problem I can see as of right now is the music. If you want, I can help with composing and stuff. Games like this deserve a great soundtrack!
In the way of composing music, yeah, I'm not very skilled. I guess I could use some help with that when the time comes.
(The reason I was borrowing other video game music to use in 8-bit form was to draw similarities to Mega Man ROM hacks that do the same [Wily's Dream Space is my favorite example of this.])
Mega Man -1? Seriously? Is that all that you can think of? So is it supposed to say "negative 1" or just 'megaman one'?
No offense. Maybe I just don't see the meaning of the title you chose. 
In any case, game looks good. Although it looks like there seems to be a few glitches with the moving platforms. From what I can tell it looked like megaman was either falling from a particular spot of the platform, or trying to jump off it but couldn't?
Also, the movement pattern of that platform seems familiar. Were you trying to recreate Dr.Cossack stage 2 style platforms?
I chose the name "Minus One" partly because of other fan-games using numbers 11, 12 and so on, although I could tie it somehow to the idea of the plot, which involves Roll, Auto and the others turning against Mega Man.
As for the platform, the short frames of falling was just a bug I'm working on.
While I see that it does resemble the Cossack 2 platforms, I wanted it to return to its original Y-position instead of continuing to rise.