It has everything the previous games had (which isn't saying much) along with superb voice acting. It really gave the characters a lot of personality. Add to that a badass open world and you got yourself a game well worth the price.
All of them. I love the Lego games too much, but my personal favorite is Harry Potter Years 1-4, only because I love the books and the movies, and the game really manages to capture the vibe of Harry Potter (and Legos) perfectly.
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