Nintendo needs to make sure the Wii U takes off and picks up momentum. Putting all their resources into is sensible, because it won't sell without good games, and if it doesn't sell no one will make games for it.
While Nintendo plans to continue selling its original Wii game console for a while, as it believes that it still has value even after the Wii U launch, the company itself does not have any new games for Wii in development, which clearly signals the end of the platform when it comes to core gamers. At the same time, Nintendo Wii will remain on the market as a cost-efficient option.
“Wii itself is really interesting because there are so many people who have that system and know what that system is that there's still a lot of opportunity for software sales on Wii. […] I think there is also the potential for a lot of people who still have not purchased Wii, who might be interested at the right price. […] There are [no new Wii games in the development pipeline] right now,” said Bill Trinen, the director of product marketing at Nintendo of America, in an interview with GameSpot web-site.
Nintendo Wii is Nintendo’s most successful home console ever with life-to-date sales of around 100 million units over the last six years. Without doubts, there will be a lot more games developed for Wii sold, however, core gamers will now have to migrate to Wii U as very few new titles will be released exclusively for Wii.
At present, Nintendo sells Wii console with Wii Sports and Wii Sports Resort titles on a single game disc, as well as a Wii Remote Plus and a Nunchuk controller at a suggested retail price of $129.99.