RetroFriends has posted an update about the game:
[font=verdana:yptm7cvo]Well, I'm definitely holding on to my own two signed copies for the foreseeable future, but you have the go ahead to have a cartridge created. Godzilla will be developed further however, so you may want to hold off on that unless you're satisfied with the game as it is now.
If you'd like to directly support the development of the game, I have a small patreon dedicated to my Atari Dev here: http://www.patreon.com/luckycassette
At which point you can just throw a dollar or two at me, donate the 50$ reward tier in which I go and put the order in here at atari age, or do it yourself and give me nothing :^)
Regardless of what you (or anyone else) do, the latest rom is here in this post, you are free to do as you wish with it.[/font:yptm7cvo]