John: One of the best things about the main quest is that it actually has a lot in common with 24. Wait...stay with me here, I'm not going completely crazy. So far, I've found that every time you reach any kind of conclusive resolution to a problem, what actually happens is that you only really get a sort of 90 per cent feeling, the way you do at the end of an episode of 24. Just as something is resolved, you're already on the path with the next set of problems - and that's a big part of why it's so hard to put down. It's very easy to play the game in a way that makes it feel absolutely relentless.