I am absolutely amazed.
I am flabbergasted at what you've achieved in these five episodes using only crappy 8-bit sprites and a smattering of well-chosen orchestral music: you've created an honest-to-God Mario Brothers tragedy that is well-written, suspenseful, intelligent, and honestly moving. If the ending (the very, very ending) didn;t feel so abrupt, I'd be tempted to call the series flawless. I'm out of things to say, honestly, so I'm going to pick my jaw back up off the floor and shuffle on out of here.
P.S. You are SO going on my favorite artists list.