One of the biggest hurdles facing sequels in just about any medium (be it film, games, etc.) is maintaining continuity. Few projects are actually planned to spawn a sequel, and hence they tell a complete story in one installment. Trying to add to that story with a follow-up can be a recipe for disaster (as anyone who's seen Halloween II can attest). The pitfalls become even more dangerous when the creators of the original aren't brought back for the second installment-a change in director or developer can change the entire aesthetic vision of a project and it's always a gamble as to whether that will turn out to be a good or bad thing. Imagine, for example, someone other than Francis Ford Coppola directing The Godfather Part II-odds are, with someone else at the helm, it wouldn't be the classic film Coppola made. As far as games are concerned, one need look no further than Devil May Cry II for an example of just how disastrous switching developers on a sequel can be...