7. Mass Effect 2
https://www.youtube.com/watch?v=xkpkglJcI14 Mass Effect 2 was all about the characters, and BioWare knew it. Martin Sheen's gravelly tones perfectly introduce many faces that later became fan favourites, and the trailer showed off the more action-orientated direction that the franchise was going in with some incredible CGI. Everything about the trailer suggested a bigger, more action-packed game, and that's certainly what we got from the second entry in BioWare's epic sci-fi series.