For those of you who haven’t played the original action-roleplayer Mass Effect, I suggest you take full advantage of the various cut-down deals being offered on the frankly brilliant sci-fi sprawler right now. With some dedication, you may actually finish it before the sequel comes out, but there are no guarantees.

Mass Effect 2 promises to expand on the hugely successful and critically-lauded first game by adding to the highly detailed multi-species cast. The new vocal talent on offer here includes fan favourites such as Michael Dorn from Star Trek: TNG, Tricia Helfer and Michael Hogan from the re-imagined Battlestar Galactica, and Adam Baldwin from Firefly. All in all, a true sci-fi fan geek-gasm.

This teaser trailer gives us a sneak peak at some of the new squad members, with a full-length trailer to follow later this month. Without a doubt, I’m already sold on this game. I only hope it can live up to the standard set by its predecessor.

Mass Effect 2 ships in January 2010.