<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> 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>
what feature led to the most sales for the playstation 2
what feature led to the most sales for the playstation 2
backwards compatibility
backwards compatibility