According to UK sales snoops Chart-Track, Call of Duty: Black Ops has
sold more copies than any other game in the region. That's, like, in all
of history. As of June 25, Black Ops managed to move 3,722,411 copies,
besting the previous top place holder, Call of Duty: Modern Warfare 2,
which set a record with 3,702,410 copies sold.
And if we were a betting blog, we'd say that 3.72 million figure will
only increase. With today's release of Annihilation, the latest map pack
for the game, we're going way out on a limb here and suggest there's
still some blood left to be squeezed from that stone.
http://www.joystiq.com/2011/06/28/call-of-duty-black-ops-sets-uk-sales-record-with-3-72-million-c/#comments