It's well done.
Sprites are well done and feel at the proper place within the scenery.
Someone else commented that the bacjgrounds were uber or something, but it looks like several game rips and one animated one used over and over. (Maybe I'm missing something). Not that it's bad, it worked very well but it's about average. Animation was very fluid however. Your backgrounds are of a higher grade than the crap that sometimes gets loaded, but to be fair, anyone who animates sprites at your level (which is of high quality) has backgrounds just as decent. Keep up the good work, gave it a five, and stop with the single seizure background (Add need more seizure variety.)