Nintendo found a way to get many of these controller sales to count as software in NPD: by bundling controllers with a game and adding just $10 to the price. And the strategy has worked. Nintendo told Gamasutra that since the product's launch in February of last year, 7.9 million copies of Wii Play have been sold in the US. That's more than half the number of Wii systems sold in the US (15.4 million).
We like the cow racing game.