Harry Potter and the Half Blood Prince - Sony PSP Relive the action of the movie...from the Hogwarts Express, to the dramatic revelation of the Half-Blood Prince. Compete for Gryffindor in Hogwarts Quidditch Cup as you take on Hufflepuff, Ravenclaw and Slytherin in the most exciting wizarding sport. Take part in thrilling wizard duels, battling against Death Eaters in Hogwarts, Inferi in the Horcrux cave and much more. Join the Gryffindor Dueling Club to perfect your dueling skills before you take on the other houses. Will you become the Dueling Club champion? Create magical potions with Professor Slughorn, using the Half-Blood Princes Potions book.