9. Relive Bruce's Training
Batman Begins was the perfect Batman movie - it had a great story, incredible characters, one of the best villains ever seen in a movie, and the best training montage, too. The journey he makes to arrive to the League of Shadows, and its subsequent training there... well, it's an incredible sequence. While this doesn't necessarily have to be a game, it does give the opportunity to create an app that would allow you to train yourself. There are tons of apps that work as some kind of personal trainer, and I'm sure that one based on Bruce's training with the League of Shadows would be a pretty cool one, having Ra's Al Ghul training you and helping you get in shape would be really awesome. They could also implement some minigames that would let you unlock some pictures or even comics. And for the part in which you have to face your fears, they can use a system similar to the one used in Silent Hill: Shattered Memories - during the time you're using the app, you would have to ask a series of questions which would determine what you'll face in the end. Now
that would be really cool.