Final Project idea?

I was thinking about exploring the game Heavy Rain for my final project. I would like to discuss the nature of narrative in games, and the ability of games to be effective story tellers. Can games convey emotion? Can they do it effectively? Can they do it in a way that does justice to important/deep/heavy/sad/real topics? What about a game makes it effective as a story? Does Heavy Rain exemplify the narritive ability/emotional capacity of “videogames”? My biggest problem at this point is that I haven’t finished the game yet (only started it) and i hope i can finish it, or at least know wnough about it to answer these questions in time.