Another month has ended, and another month's worth of data has been compiled.  As usual, here's the links. 

http://www.skyrender.net/2008_console_sales.txt (Plain Text)
http://www.skyrender.net/2008_console_sales.zip (Excel)

 It should be noted that the Excel version has a new feature not found in the plain text version: Projections.  These are mathematically formulated sales projections based on sales for 2007.  They're as close as I'll hazard to a prediction, and not particularly accurate, but it is kind of fun to see how 2008 could turn out if it's anything at all like 2007.  Note that, like most of the features of the spreadsheet, any projections past May at this point are not useful as there's no data yet for those months.

 Anyway, enjoy!

OMG at the month of May for the Wii! its over 1 million already! Must calculate

I calculated it its over 2 million already WOW... 

where are the projections on the excel one?

Nice effort and work Sky Render. A lot of information.

Projections vary from month to month, and according to updated data. For May, using the data as we have it now, here's what it looks like:

System / 2008 Sales Range / Cumulative Sales Range / Market Share Range
Wii / 24,576,286 to 30,020,795 / 43,794,254 to 49,238,763 / 45.30% to 50.75%
PS3 / 13,235,351 to 16,167,445 / 22,108,720 to 25,040,814 / 22.29% to 26.50%
360 / 9,825,090 to 12,001,691 / 25,671,490 to 27,848,091 / 25.68% to 29.70%
DS / 29,776,798 to 36,373,402 / 93,411,898 to 100,008,502 / 65.56% to 68.68%
PSP / 15,615,533 to 19,074,920 / 45,605,665 to 49,065,052 / 31.32% to 34.44%

The full projections can be found on the fourth tab of the spreadsheet (tab #1 is weekly sales, tab #2 is yearly overview, tab #3 is charts, and tab #4 is projections). 

congratz good work.
WOW for Wii!!

ps3 owning 360, i think its over for xbox now.

lol, nice entrance!

nice job man,im thinking soon when production is fixed,wii will not fall under 400k

The projections keep getting higher and higher for the Wii's end point, suggesting that it's selling at a faster comparative pace than it did in 2007 (though I think that's obvious enough just looking at the intense supply-side issues it's been plagued with since the Christmas season started).

I also noticed something else that's relevant: the sales peak of a standard console on the market. Traditionally, consoles peak at their third year and start declining (slower for popular systems like PS2, faster for the market minority ones like the GameCube). Though Nintendo handhelds don't follow this trend (largely because they haven't had any significantly high competition until the PSP; they tend to peak around year 4 or 5), consoles do with eerie frequency (even the PS2 had its peak year early, in 2002). However, no console has ever had consistent supply-side issues this late into its lifespan before the Wii, save one console: the NES. Though we don't have month-by-month sales data for the NES, I do recall that it had stellar sales throughout the 1980s, well longer than the 3-year apogee point.