S3V3R3D on 07 December 2009
http://www.variety.com/article/VR1117982551.html?categoryid=20&cs=1
There you go, Halo 3 sold 2.5 million in 24 hours in the United States, and that was in September 2007 (when Xbox 360's install base was 6 million? in the U.S.).
These figures make NSMB's look weak, IMO. 







