UK: Halo 5 is the Lowest Selling Mainline Game in Franchise History

[jason1637]

MotherBound said:
Just wondering, what was XB's install base when Halo 2 came out?

Well the 360 launched in 2005 and the og xbox was discontinued in 2008 and halo 2 launched in 2004. I''d say aroudn 20 million but i cant find any info to back that up.