I've played Nomad Soul, Indigo Prophecy (Fahrenheit) and Heav Rain before. I like Cage for his visions and for what he's trying. But I think he overdone it. Beyond Two Souls put you in the role of Jodie Holmes, a young woman with "another soul" called Aidan –a non-physical entity– who seems to has his own personality. He's not physically there but is able to react with its environment, though. That's causing trouble for Jodie ever since. The game basically let you play key moments of Jodie's live from a little girl to an adult woman, working as an field operative for the US government, living homeless on the streets or escaping from authorities. First hours seems a little vague since the plot is evolving slowly and is more focused on Jodies live and the mentioned "key moments". But at the end of the day it all comes together. While doing so, Beyond Two Souls looks very beautiful, the facial expressions are remarkable. The plot and its moments are intense and very emotional. You do really care about the characters and want to know what's going on. That what drives you further, keep you going. It is just a beautiful game.
But it has one big flaw. It actually lacks of being a game. Let me explain first: What are the possibilities of a game over other media like books or movies? Think about it. Think about the first games ever, the first games of your childhood. Don't get me wrong, there is nothing wrong with cinematic presentation. But BTS exaggerates. It allows you only to move on rails, it doesn't allow to explore. Not that there would be anything to explore since there is no inventory, no items, stash, gear or things to collect that help you to progress. So almost everything that is available in other games is missing here. You don't need tactics, you don't have to think, there is no failure. You just keep pressing the right buttons at the right moment. And even if you do fail at that, the game is seldom over. There is one mission I re-played, laying down my pad on purpose. After Jodie got pretty beaten up, the "mission" ends with a different cutscene. But it has no impact at all. All it did was sparing me from another 10 minutes of gameplay in that mission. It doesn't matter if I fail or succeed there. It's like in L.A. Noire where it doesn't matter to get all the right answers from the suspects (only to rate your mission with higher score).
A game is supposed to give you freedom. Of course there are natural limits since, well, it's not imagination and the game have to keep you on track of the plot. But to tie you up THAT tight is not necessary. The authors and creatores should have used the possibilities games more than those of a movie. Mixing up is fine, but you shouldn't sacrifice things that make videogames that great.
Heavy Rain did a slightly better job on that purpose since you really do have to live with the consequences of your decisions. Decisions, or failure, could lead in a character's death and change the entire outcome of future scenes or the end of the game. Beyond Two Souls basically offers you a classical button-pushing-end with slightly different scenes based on your decisions. That's one step down from Heavy Rain. To be fair, you had to fail very hard at Heavy Rain in order to lose characters and finally get the murderer getting away.
So in conclusion BTS is very poor on gameplay-wise, especially when you got used to the control of Aidan. It just doesn't cope with its medium (of being a game). Remember Indigo Prophecy where you character could actually kill himself. It's not much but that is a little gameplay component you had to watch out. Remember The Nomad Soul? For such an early game it had a great focus on story and its cinematic presentation, and it offered unique gameplay elements in such combination never seen before. But as mentioned I think games don't need that to this extreme extend. They completely stripped those things away in BTS, propably to give you a plain, cinematic experience without anything that could possibly distract the player in any slightest circumstance from that experience the developer had specifically in mind for you.
That makes Beyond Two Souls all in all a good game, because its quality on the acting, visuals, sounds and overall presentation is top-notch, but definitely not a great "game" or anything better.