Mass Effect 3, by far, Mass Effect 3.
Not just because people overreacted, but how.
The ME3 controversy went so far down the rabbit hole, it culminated in the introduction of the misuse of the phrase "entitlement" into internet culture; often reducing the meaning of the word to ridiculous strawman argumentation.
Seriously, I've seen misuse of "entitlement" applied to fucking EVERYTHING.
Bad games, relationships, feminism, religion, preference of fucking COFFEE.
All because some gamers threw a huge tantrum over the ending of a video game.
So yeah, I have a bit of an axe to grind with that.
In the most common context of its misuse, "Entitlement" implies someone is wrong for demanding beyond their rights, but by the actual definition of "entitlement", that isn't true; in that context "False sense of entitlement" is true.
And, no internet, you can't just shorten the phrase to "Entitled/entitlement" as lingo or laziness.
Because by that logic "Don't Stop" could be shortened to "Stop".
It's fucking ridiculous.