This is really good stuff. I can imagine a 2D side-scrolling game to this.
It opens up smoothly and quietly and immediately goes to a catchy beat. It does have a credits or finality feel to it, for a chiptune at least.
There are some elements to it that make it sound very modern, like the kick drum. It even sounds like you have some sidechain compression on the bass, which is a pretty neat touch.
And the fade-out is very neat, and reflective of a really good end to an 8-bit tune.
I really got not complaints about this. The melody's quite simple and memorable, with some variation here and there, and it's good enough to keep me focused on the music!
What did you use to make this? It really sounds as if you've extracted the audio chip from a NES, and put it in your computer or something!