Harry Potter and the Order of the Phoenix is one of my personal favorites and the closest thing we got to a true open-world Harry Potter game. The school itself was a faithful adaption of what we saw in the movies, complete with talking paintings and moving staircases. The game was still story based but players had more freedom in terms of exploration. You even got your own copy of Maurader’s map to show you around.
Things worth keeping: Open-world gameplay, talking portraits, Maurader’s map