Clocking in at just four and a half hours, “Harry Potter and the Deathly Hallows – Part 2” takes the least time to beat. The shortest “Harry Potter” game is tied to the shortest movie, but while the film has a respectable 130 minutes, the game's four-and-a-half-hour playtime is short by game standards, and a full completionist run won't take players beyond seven and a half hours.