GameSpot writes: "As you might expect, the plot of The Half-Blood Prince follows the movie and its literary counterpart closely but, it being a relatively open-world game, there will be lots of chances for exploration in the game. As you make your way around the school grounds, Harry will be able to find hidden and not-so-hidden crests strewn throughout the world. Finding these crests will unlock new characters and items in the game.
With easy controls and a story that's proven to be a winner (at least in book form), Harry Potter and the Half Blood Prince is looking like yet another serviceable translation of the literary and film phenomenon. The game is due to arrive with the film this summer".