So I am currently replaying through the Arc the Lad Trilogy of PlayStation games and after finishing the very vanilla first entry, I've jumped into the sequel which has proven to be a massive improvement overall in terms of story, characters, customization, and general game layout. It's almost astonishing to think this game was developed by the same team as the first one, and even more so when you realize the game's are only a year apart from each other.

This got me thinking about these types of sequels, where the first game is simply okay but then the sequel blows everything out of the water. The other entry that comes to mind for me is Assassin's Creed where the first one was repetitive and okay, but the sequel kept me hooked from beginning to end. What are some other sequels that are massive improvements over the previous entry?