I have found that during my gaming time I struggle to find games that really implements choice in an impactful and successful way.
For example, the telltale walking dead series although being heavily choiced based essentially boils down too a slightly different experience in how you progress through the game, main events and main story path is forever remained unchanged by your decisions.
Mass Effect 3 is also an example of failure of choice implementation by essentially brushing aside player choice from the previous games for the most part and giving everyone a very similiar experience.
Example: Kill alien race - they are "revived" and are now an enemy. Or Save Alien Race - they are taken over and are now an enemy.
Fallout New Vegas showed a game with heavy player choice but the consequences were only realised in a slideshow epilogue and the effects on the world inside the game itself were mostly minor, although this is a good and satisfying system it still doesn't grant the sort of choice impact I am really looking for.
Heavy Rain may be actually one of the only games I have played where choice and player actions actually have meaningful impact on the narrative, different ways to play result in many endings and this is excellent, but to be fair it isn't exactly a traditional game by any means.
So I guess my main question is, What games do you know of or that you have played that have an implementation of player choice that isn't just an epilogue or an asthetic illusion of choice when infact it's the same path but a game that takes my actions and choices and grants me an experience vastly different to other players.