Harry Potter and the Half-Blood Prince is a 2009 action-adventure video game. It is based on the 2009 film of the same name. The game was released on 30 June 2009 for mobile devices, Nintendo DS, PlayStation Portable, Microsoft Windows, PlayStation 2, PlayStation 3, Wii, Xbox 360, and Mac OS X. Gameplay Half-Blood Prince features the exploration of Hogwarts and casting spells on objects around the school, similar to its predecessor, Order of the Phoenix. The game also includes multiplayer games, classes, different times of day, Quidditch, Wizard Duels and Potion making. The Marauder's Map is included in the game, with progress opening other parts of the school. Harry can also call Nearly Headless Nick to show him around the school. Harry is the main playable character in the game, but Ron and Ginny are also available in two levels. The first has Ron concentrate on following Harry after taking a Love Potion (if he does not follow Harry, the mission fails). The second has Ginny fill in for Harry for Quidditch when he gets detention and play against the rival Seeker, Cho Chang. As Dumbledore mentions, the Duelling Club begins. Harry is allowed to duel freely with students and learn spells from them. The Gryffindor Duelling Club is located in the Great Hall, while the other Houses' are in other places, including the Paved Courtyard, Training Ground, and Transfiguration Courtyard. As Harry attends Potions class, mixing ingredients to make potions is done with the Wii Remote or analogue stick. Harry must also join the Potions Club, which is in the Herbology classroom. Potions ingredients surround the cauldron on the workbench, and through visual symbols that pop up on the screen, the instructions must be followed to complete the potion. Harry is also named Quidditch Captain. Other members on the team are Ginny Weasley, Ron Weasley, and Katie Bell. They all participate in try-outs and in the Quidditch Cup against Slytherin, Hufflepuff, and Ravenclaw. When Harry has detention, Ginny is the Seeker, while Dean takes her spot. When Ron is in the hospital, Cormac McLaggen takes his spot on the team. During the game, there are 150 shields to collect that are found throughout Hogwarts Castle. The shields can be found by casting spells such as Reparo if they are broken on the ground or by using Wingardium Leviosa to throw an object at one if it is on a