The first downloadable content for blockbuster RPG Mass Effect was announced this morning. Check out the screen! That's the Batarians. You'll be spending a lot of time with them.

The “Bring Down the Sky” downloadable content pack will be released to Xbox LIVE Marketplace on Monday, March 10 at 2 a.m. PDT, and will be available for 400 MS points. This is the first in a series of planned downloadable content that further expands the “Mass Effect” universe and continues the adventures of Commander Shepard and the Normandy crew.

Here's what you can expect:

A "new uncharted world that introduces the notorious and feared alien race of the Batarians.  A Batarian extremist group has hijacked a mobile asteroid station in the Asgard system, setting it on a collision course with the nearby colony world of Terra Nova.  Only Commander Shepard can save the millions of innocent civilians before the asteroid completes its deadly descent."

Oooh...can't wait. Click the cut for another screenshot.