Does the view port have to 64 x 64 does the entire window have to be 64 x 64. I mean can we add a game boy or something around the game viewport so it feels like you are playing in the game boy or does the entire window have to be that size.  

So there is a provision in the FAQs for something like this:

• My game is for web, can I add border art outside the 64x64 limit? YES! As long as it's part of the page and not rendered by the game.

So on the web you could obviously style the page around the actual game. There's also a provision for optional post-effects:

• Can I use screen effects like CRT or scanlines that may exceed the actual 64x64 limit? YES! But, make sure it's optional and that the game itself is 64x64 before effects.

Interpret as you will, it's not like you'd get disqualified or anything. But other people rating your game might think differently, that's why we mention these cases. So technically even on a native build you could render the game in a GameBoy like view as long as that's not the default and is explicitly enabled by the user, then it's totally within the rules/recommendations.

The window never has to be 64x64, just the rendered resolution. You can stretch this to any size.

Thanks for clearing.