Kris Erickson writes:
"The following internal marketing graphs from Nintendo show the effect of specific game releases on hardware sales for all consoles in Europe and the united States. The data is for January-September 2008. The prominent large spike in hardware sales in the month of April corresponds to the release of GTA IV on Xbox 360 and PS3. At roughly the same time, the release of Wii Fit prompted an increase in sales of the Wii console. The effects of both leveled off after a few weeks and were later followed by other, smaller increases as different titles were released. See the legend below to match the game release with the hardware sales spike."