Needs work...
It's a good game, has a lot of potential to become even better, but you need to fix some things.
You should draw characters insted of using the heads, it just looks really bad. I also think that the music got annoying after a minute of playing.
Length, length, length. You need to make it longer. You should combine all the first 3 parts into 1 because it's rather annoying to keep looking for the next part.
Work a little more on the 3rd installment, I'll be sure to check it out.