I'm looking for games that have a really amazing story and similar game mechanics such as: having choices affect the game, conversation trees, cinematic gameplay etc. I can think of some games I've already played that are similar such as: Heavy Rain, Mass Effect (not that close, but still a little close) and I can also think of some games that I suspect are similar from what I've heard/seen such as: Fallout or Back to the Future. I've wanted to play a Fallout game for the longest time but never got around to it because I really like the idea of complete freedom and how "no two playthroughs are alike." Are there any other games similar to that and Walking Dead? I've also been interested in playing BTTF because I'm a huge fan of the films and I liked the demo and I also loved the premise of the story. How does it compare to Walking Dead?
Aside from anything I've mentioned, do you have any other suggestions?