This is a corrected version of the story that ran earlier today by AJ. In it we incorrectly stated that Bill Murray's voice would not be in the console game. We reconfirmed with Atari that Murray's voice will be in the console games. We apologize for any confusion.
The DS version of Ghostbusters: The Video Game is made up of three main parts: Management (upgrading character skills, researching technology, making weapons, etc.), Driving the Ecto-1 around town and – duh – Busting, which is basically questing. There's the main quest which is modeled after the plot of the console versions of Ghostbusters (minus the Rookie character), and a series of side quests that help the Ghostbusters earn cash to afford weapon and technology upgrades. Questing also builds up the Reputation score – if this score drops to zero, it's game over.