Broader appeal
"At the moment it looks like Nintendo is the winner" said Yasuhink Hirakawa, an asset manager at DLIBJ in Tokyo.
The Wii has been helped by its fun image, with users able to use the machine like a wand and, depending on the game, wave it in different ways.
The DS console, which opens like a book and which users control by using a stylus, has gained popularity among women and the elderly - groups that are not typical games console users.
Names such as Mario, Pokemon and Donkey Kong are traditionally associated with Nintendo, but the company has also introduced games targeted at older players, such as Brain Training for Adults, which have sold well.
The success of the Wii and DS has already led Nintendo to set bolder profit forecasts for the full financial year. It recently predicted that profits would rise by 28% to 185bn yen for the year to 31 March.
