While we've reported on the Xbox 360 continually outselling the PS3 in Japan in recent weeks, what we weren't aware of was just how much growth Microsoft's platform has experienced across the Pacific for a good chunk of 2008. According to the latest Famitsu Marketing data received by GameDaily BIZ, for the period of March to September, the Xbox 360 has actually enjoyed more unit sales growth year-over-year than any other platform.

While the PSP has surged with 132 percent growth, the Xbox 360 grew 157.1 percent during the seven-month span. That said, it's important to recognize that there was far more room to grow with the Xbox 360 to begin with given its still comparatively low unit sales. During the March-September period, the Xbox 360 sold 138,740 units compared to 88,292 during the same time a year earlier. Conversely, the DS Lite, which has already sold a whopping 17 million in Japan, grew only 37.1 percent. The PS3 meanwhile grew 88.5 percent, the Wii 68.2 percent, and the PS2 57.1 percent.

Even with the 360's improving sales in Japan, the console has yet to break a million units in its lifetime. Here's how the lifetime sales (in units) stack up for the major platforms in Japan:

Xbox 360: 748,992
PS3: 2,369,484
DS: 6,449,206
DS Lite: 17,080,747
Wii: 6,826,612
PSP: 10,181,888
PS2: 21,454,325