Simplify the following text for a Grade 6 native English-speaking person.
Original: Kingdom Hearts Birth by Sleep is the sixth title in the series , released for the PlayStation Portable in Japan on January 9 , 2010 , and in North America on September 7 , 2010 .
Simplified: Kingdom Hearts Birth by Sleep is the sixth game in the series , released in Japan on January 9 , 2010 , and in North America on September 7 , 2010 . It was made for the PlayStation Portable .