A ZootFly statement reads:
"We are very glad to see the overwhelming response to the Ghostbusters prototype movies. What you've seen is indeed in-game footage of early prototypes on the Xbox 360, running on ZootFly's proprietary engine. Due to licensing issues, further development of the Ghostbusters game hit a bump on the road, but everybody here at ZootFly is working actively on resolving the challenges with the owners of the Ghostbusters IP."
Based on the in-game footage seen so far, this could be a pretty good game. You can see the footage at the ZootFly homepage.