vaguely interesting
It kinda works, though it doesn't make much sense. I assume you are just trying out things you can do. As an exercise in your abilities, I imagine you might be quite satisfied, but as something for an oursider to watch, it comes across to me as fairly pointless. I keep expecting something to happen, to follow as consequence and it doesn't.
Replay button is a Newgrounds essential and SO easy. You will want people to be encouraged to replay your work and explore it; to see the subtle things they may have missed first time, so make a big bold inviting replay button every time!