Best sprites I've seen so far...
Nice sprites man.
Realy looked well.
Ya made a realy god parody on old games like this.
Music, sound, graphics:all good keep it up man.
Oh, just one more thing...where do you guys get these realy good old game sounds?
And just some advice:
Export the rated P thing as a picture, and replace the simbol. This way it won't look weird when it fades out.