reverie on 08 May 2007
Eric, Being the perfect gift for girls and women, Nintendogs will probably keep selling non-stop until Nintendo release a new version. And that's why they probably won't release a new version that soon. 
If it gets another Christmas season for itself it will easily cross 20 million.
Regarding the different versions, The gameplay is identical, they only differ in which dogs you start with and which you will have to unlock. You start with a selection of 6 out of 20 dogs. Beyond that, each version as 10 exclusive collectibles (besides oodles of common collectibles). You can share breeds with and gift collectables to other Nintendogs player over WiFi.
Hardcore gaming is a bubble economy blown up by Microsoft's $7 $6 billion losses.
