Saw an add for this on the Sci-Fi channel. It looks like great fun to me. It reeks of an AvP rip-off though, even if the Alien Creatures are nothing like the Alien or Pred. From what i could make out of the commercial + tagline there are 2 deadly alien species at war + Earth is they're battleground. It also appeared if a lot of stuff blew up.
Here is the page @ Sci-Fi but nothing is there, not even a trailer -
http://www.scifi.com/showdownarea51/