From Take-Two’s Q4 earnings report:
Borderlands from 2K Games has now sold over 2 million units worldwide and has established itself as a key franchise for Take-Two, for which the Company has long-term publishing rights.
The Company’s internally owned and developed Carnival Games™ franchise from 2K Play’s Cat Daddy Games studio sold over 5 million units worldwide on the Wii™ and DS™
Carnival Games Natal and PlayStation Motion Controller confirmed.
-Justin


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[...] title’s sales were reported by Take-Two to be at 2 million mid-December, so it looks like Borderlands has some sales staying power now that it has sold [...]