<Tr> <Th> Successor </Th> <Td> PlayStation 3 </Td> </Tr> <P> The PlayStation 2 (PS2) is a home video game console that was developed by Sony Computer Entertainment . It is the successor to the PlayStation and is the second installment in the PlayStation lineup of consoles . It was released in 2000 and competed with Sega's Dreamcast, Microsoft's Xbox, and Nintendo's GameCube in the sixth generation of video game consoles . </P> <P> Announced in 1999, the PlayStation 2 was the first PlayStation console to offer backwards compatibility for its predecessor's DualShock controller, as well as for its games . The PlayStation 2 is the best - selling video game console of all time, selling over 155 million units, with 150 million confirmed by Sony in 2011 . More than 3,874 game titles have been released for the PS2 since launch, and more than 1.5 billion copies have been sold . Sony later manufactured several smaller, lighter revisions of the console known as Slimline models in 2004 . In 2006, Sony announced and launched its successor, the PlayStation 3 . </P> <P> Even with the release of its successor, the PlayStation 2 remained popular well into the seventh generation and continued to be produced until January 4, 2013, when Sony finally announced that the PlayStation 2 had been discontinued after 13 years of production--one of the longest runs for a video game console . Despite the announcement, new games for the console continued to be produced until the end of 2013, including Final Fantasy XI: Seekers of Adoulin for Japan, Pro Evolution Soccer 2014 for North America and Europe, and FIFA 14 for Brazil . </P>

What feature led to the most sales for the playstation 2