The game presents the player with a large part of the Harry Potter universe, combining the movie blueprints, J. K. Rowling's drawings and books' descriptions to recreate known places, including the Ministry of Magic, Grimmauld Place and Little Whinging. As well as the main missions, and as part of the new sandbox style of playing, players can explore Hogwarts and interact with objects, using magical spells to earn Discovery points. One can duel Slytherins in the Entrance Courtyard, Paved Courtyard, and specific floor corridors. One can also duel throughout the story. Most of them are played as Harry. Near the end of the game’s story, the player controls both Sirius Black and Dumbledore in separate wizarding duels. Earning Discovery points increases the power of the owned spells, and earns player bonuses, such as behind-the-scenes videos and trophies, which can be viewed in the Room of Rewards. Items in the room such as trophies can also be unlocked by taking part in the various minigames, such as Exploding Snap, wizard chess and Gobstones. There are various missions to complete which follow the storyline of the film, such as the recruiting of Dumbledore's Army members, or creating havoc when Umbridge is made Headmistress.