Don't let the title completely fool you. A lot of the games that encompass the format of butterfly effect games are quite excellent. Heavy Rain was the first game of this "your choices matter" experience I had ever played, and to this day it holds a nice place in my memory, thanks to it being such a unique of an experience in my earlier days of gaming.
But the idea that the player is given "complete control over how a game ends" is a complete bullshit statement. There's absolutely no way a gamer can decide to do something that breaks the boundaries of a game's narrative, as there's no real way to allow it. It's not like you can decide to say "screw it" in the Mass Effect trilogy and "nope" the hell out of there to find planet Earth. Narratives such as these can be a lucrative experience, without a doubt some have been groundbreaking for that matter, but let's explore some of the inherent problems in butterfly effect games that continue to exist within this booming genre.