One month has passed since we added these new StreetPass Mii Plaza games, and we did not use any type of mass advertising. It was written on our homepage, with information about all the new content included in the update. You are also made aware when you visit the StreetPass Mii Plaza for the first time after the update, but we didn’t use anything like television commercials to advertise.
However, in this state, we have generated a lot of income from our customers. Furthermore, a lot of the people who are playing and enjoying the new games are communicating and advertising through outlets like Twitter. Thanks to this, the circle of customers is growing bigger and bigger, and interestingly, sales were a strong ¥400 million in only a month.
http://nintendoevery...k-of-promotion/
I think the price is a bit too much for these games.