Giving players the option to choose is the new frontier in game design. Players want to decide who to save, what to say, which path to follow. But real choice is not about dumbly following a script. It's about doing what you want to do. Games like Infamous 2, Red Dead Redemption and Mass Effect 2 have all attempted to place player-choice as a cornerstone of the experience, but none of them have succeeded anywhere near as well as Catherine...