In an
interview with Xbox 360 magazine, the creative director of
Spinter Cell Conviction has revealed that if you are playing the game on normal difficulty you should be able to get through it in 12 hours. Their reasoning is they want anyone to be able to get through the entire game but if you think it's too easy, there will be a realistic mode where two bullets will kill you and the enemies will be tougher. I thought 12 hours were the norm these days with single player games but maybe I'm wrong. For a $60 game, I'd like a 15-20 hours worth of gameplay if it's a straight action game. For RPGs and adventure games I'm looking for a lot more of course.