Inspiration: You nailed it. The three NES games you drew have their DNA all through this adventure.
Usability: The presentation of the material is well thought out and intuitive. Legibility isn't ideal, especially on page 3. But with fewer words or more pages to fill out (not an option for this jam, unfortunately, but maybe after the ratings are done?) I think the general idea of the layout would work really well at the table.
Vibes: This is the very definition of "8-bit" all the way. The premise and the art (including the headers) beautifully reinforce the vibes and would easily telegraph to my players what the expectations are in terms of gameplay. A perfect gonzo adventure.