Electronic Arts and Bioware has released the first teaser trailer for the highly anticipated role-playing game, Mass Effect 2, which isn't expected to be released until 2010.

Little is known about Mass Effect 2, but it is expected that the storyline will follow on from the end of Mass Effect.

Owners of the original game have been advised to keep their game saves as decisions you made then are expected to influence your character in the sequel.

It's a shame there's no gameplay footage, but at least it's something to keep us going.