In Harry Potter and the Half-Blood Prince, Dumbledore prepares Harry for the final battle that he knows is fast approaching as Voldemort is tightening his grip on both the Muggle and wizarding worlds. Together they work to find the key to unlock Voldemort’s defences and, to this end, Dumbledore recruits his old friend and colleague, the well-connected and unsuspecting bon vivant Professor Horace Slughorn, whom he believes holds crucial information.

Harry Potter and the Half-Blood Prince is a video game, developed by EA's Bright Light Studio and published by Electronic Arts. The game was released on June 30, 2009, to coincide with the film's new mid-2009 release date.The game was released on the Mac OS X, Microsoft Windows, Nintendo DS, Wii, PlayStation 2, PlayStation 3, PlayStation Portable, Xbox 360, and Mobile platforms.

Half-Blood Prince features the exploration of Hogwarts and casting spells on objects around the school, similar to its predecessor Order of the Phoenix [1]. The game also includes multiplayer games, classes, different times of day, Quidditch, Wizard Duels and Potion making [5]. The Marauder's Map is included in the game, as further progressing can open parts of the school. Harry can also call Nearly Headless Nick to show him around the school.

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 such as the Paved Courtyard, Training Ground, and Transfiguration Courtyard.