The DS console, which allows users to control play with a stylus, has proved popular with women and older users.
Meanwhile the motion sensitive Wii has proved popular after introducing a new way of playing computer games.
UK hit
Earlier this week, Nintendo's Wii Sports swept the board at the 2007 British Academy Video Games Awards in London.
The games package won awards in categories such as gameplay, strategy and simulation, innovation and sports.
The game allows players to compete in onscreen sporting events using the Wii's controller as a tennis racquet, golf club or even a bowling ball.
Nintendo has upped the number of Wii consoles it expects to sell in the year to March from 16.5 million to 17.5 million.
Demand has been so high that the Japanese firm has had supply difficulties. It is thought that it will take another year before the firm can ramp up production to meet demand.
