So, here's a fun idea. Mars candy just released special promotional Black & White M&Ms. Presumably you have to "join the Great Color Quest" to help find their colors, whatever that means.

But, there's an opportunity for you to turn this promotion into your own advergame. While this promo is running, every bag of M&Ms is also a portable, edible game of Go! If only Mars had printed a tiny goban on the inside of the package...