As awesome as Portal was or is, I'm not sure a sequel is going to work. There was something so pure and refreshing about that game, and adding a 2 at the end of it and trying to continue the story... eh, that just doesn't sound like a good idea. Not to mention that the aperture science center was completely destroyed at the end. Maybe they could try and do a prequel... but some how that doesn.... uh I'm bored with this.