Complex sentence: The second and third Suikoden games were direct sequels from the respective previous installment but with "Suikoden IV", the series has begun to delve into prequels whose events take place before the games released earlier.
Split into simpler sentences: The second and third Suikoden games were direct sequels from the respective previous installment. With "Suikoden IV", the series has begun to delve into prequels whose events take place before the games released earlier.