Greetings All! My son said he really likes this book series. As I was researching it, I see that the entire aspect of cards and online clue unlocking and gameplay are now gone. I'm not sure he ever knew about those things in the first place, as he only read the first book through Epic's website.
My question: Is the series still a worthwhile, conclusive read even without the cards and online element which no longer exist? I just want to make sure he'll still enjoy the books, and won't be left hanging because of features that have been lost to time.