Fun: This game is fun, it might only be so for a couple minutes, but it is still fun.
Visuals: You nailed the NES astetic
Music: A bit to repetitive, even for NES standers
Sound: The sound effects are good, wouldn't change them.
Story: n/a
Theme: I think the idea is that you only have a small slow-mo timer, but that isn't much of a problem as you can still play it just fine without it.