No, this is not another thread about "what game needs a sequel?". Rather its a thread about games series with good sequels!

I was thinking to myself about Chrono Cross. Though not a traditional sequel, I felt the game was quite amazing and not only expanded the Chrono mythos but actually made the original game deeper in terms of story and characters. For these reasons, I really do feel CC is a pretty damn good sequel

So what other games series have had awe-inspiring sequels that make the whole series shine?