This game gives off a really intense NES atmosphere, which I don't come across a lot in webgames these days. The magnificent graphics in conjunction with the epic music work perfectly together. Plenty of neat little power-ups, good level design, cool enemies.
One major issue I have to point out in this game are the controls. Actions feel way too delayed and uncoordinated, especially when I'm trying to jump. I am obliged to hold the run button, jump button AND move around in the air in order to achieve a greater height.
I really want to see this further improved on! It has a lot of potential!