In the game, players take on the role of a Hogwarts student: Harry, Ron, Hermione or Neville, each with their own personal deck of cards that's used to acquire resources.

By gaining influence, players add more cards to their deck in the form of iconic characters, spells, and magical items. Other cards allow them to regain health or fight against villains, keeping them from gaining power. The villains set back players with their attacks and Dark Arts. Only by working together will players be able to defeat all of the villains, securing the castle from the forces of evil.