Area 51 As A Plot Device in Games

I'm surprised Area 51 is not used in video games more often.
Here's a background:

Less than 100 miles from the great land of Las Vegas. We have an Air Force testing center(supposedly)it is in the area designated by the Atomic Energy Commission as "Area 51" the air space is so restricted, not even military aircraft are permitted to fly over it. If a rabbit triggers the alarm, they are ordered to kill it.(This specific piece of information is first-hand info)With a .50 cal rifle. When people fly in, they are blindfolded until they arrive.(Also another report not from the two sites listed) Some reports include that if you worked on a project, you would have no clue of what's going on in the building next to you, when a plane takes a test flight, everyone is ordered inside until it is done. Now, what could they be hiding that is so important? Could there be aliens? Maybe some kind of zombie virus to kill of China? Or maybe a wormhole to take us to other wonderful universes in Star Trek-like quests?
(Thanks HowStuffWorks.com and eHow.com! for the info!)

You see where I'm going with this? Area 51 could be a great plot device. Well, anything can be a great plot device if used correctly. After doing a search for "Area 51" on IGN only 3 or so games showed up that had anything to do with Area 51. Imagine Fallout 3 having Area 51?

Now, let's talk about two games I did find about Area-51. First, we have blacksite. (http://www.blacksitegame.com/) It looks awesome.
Blacksite is about a small town which has been overrun by aliens and the governments getting desprate to hold terrible secrets.

The other one, you have got "Area 51" which also looks awesome.

There doesn't seem to be too much story, but the reviews are great.