Within twenty-four hours of its release, "Grand Theft Auto IV" sold over 3.6 million copies, equating to approximately $310 million in revenue. Within a week, it generated more than $500 million in worldwide revenue, equating to approximately 6 million copies sold for Take Two. The numbers surpassed analysts' expectations for the title. After one month of availability, the game had sold over 8.5 million copies. It broke three Guinness World Records on 13 May 2008: highest grossing video game in 24 hours, highest revenue generated by an entertainment product in 24 hours, and fastest-selling video game in 24 hours. On 11 March 2011, Take-Two announced that the game had sold over 20 million copies, with the "Grand Theft Auto" series surpassing a collective total of 100 million copies. As of July 2013, the game has sold over 25 million copies, making it one of the best-selling video games, and one of the best-selling games on both PlayStation 3 and Xbox 360. All sales records broken by "Grand Theft Auto IV" were beaten by its successor, "Grand Theft Auto V".