Simplify the following text for a Grade 6 native English-speaking person.
Original: Kingdom Hearts coded is the fourth installment in the series for Mobile Phones and was released in episodes with the first being released in Japan on November 18 , 2008 .
Simplified: Kingdom Hearts coded is the fourth game in the series and was released in episodes with the first being released only in Japan on November 18 , 2008 . It was made for mobile phones .