Harry Potter and the Half Blood Prince Game Demo Now Available For PC points the way to a Harry Potter And The Half Blood Prince Demo that's now available for download from EA's FTP Server. The demo is a 595 MB download, and it includes two sections: "Gryffindor Dueling Club" and "Flying Club." Also, there's also a new "making of" trailer from the game on AtomicGamer and Gamer's Hell and a "Quidditch Preview" trailer on AtomicGamer and FileFront.