Stop right here for a minute folks, there's finally a kickstarter project worth mentioning. Not only are we dealing with a documentary about creating an actual NES game, but backers will also have the option to purchase an actual cart.
The kickstarter is called "The New 8-bit Heroes: New NES game and creation documentary" and is being maintained by Joe Granato.
The pledge goal is set to $36000 and with 28 days to go there's $19000+ already pledged, so it looks like it won't be a problem finding funding for the project.
However you would like to watch a docu about an NES game in the making and then even get to play it, why not chip in?
The kickstarter page can be found here https://www.kickstarter.com/projects/1316851183/the-new-8-bit-heroes-new-nes-game-and-creation-doc