This is a list of video games for the PlayStation Portable video game console that have sold or shipped at least one million copies. The best-selling game on the PlayStation Portable is Grand Theft Auto: Liberty City Stories. An action-adventure game developed in a collaboration between Rockstar Leeds and Rockstar North, Liberty City Stories was originally released in North America on October 24, 2005, and went on to sell 8 million units worldwide. The second-best-selling game on the console is Grand Theft Auto: Vice City Stories (2006), which sold just over 5 million units. The top five is rounded out by Monster Hunter Portable 3rd (2010) selling 4.9 million units, Gran Turismo (2009) with over 4 million units sold, and Monster Hunter Freedom Unite (2008) with 3.8 million units sold.