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3. NBA 2K12

The threat of an NBA lockout at the beginning of the 2012 season put a lot of focus on Take-Two's big sports franchise, which seemed to help sales. The game also lured in casual players with its retro theme, offering modes where players could replay some of the biggest games of the sports' biggest players —including Michael Jordan and Larry Bird. In its most recent earnings call, Take-Two said it had sold more than 5 million units of the game, but didn't note if those sales were domestic or global.

Photo: Take-Two Interactive Software