Definitely Fallout. especially if you deal with mariposa first and then talk master into a suicide. i dont like canon ending, for me this one is way more iconic, especially if master kills himself. Yes, the writing is flawed, anyone sane will ask themselves "how come master didnt check this?", but, oh god, his model, the voice acting, the tension - its all so amazing, no matter if you reach him for the first time or fifth time. the way he delivers:
I... don't think that I can continue. Continue?
this doubt in his voice is players fully deserved victory. when he finally says this, then gg, bro, you just have just beaten the game. you have just mogged this gooey fella with FACTS and LOGIC. hes cooked. you won. it would be my favourite line of this game, if it wasnt for whats comming next. because when you head back home to receive the final, well deserved pat on the back from your boss, you are met with this instead:
You're a hero... and you have to leave.
after all you have done to the fellow vault dwellers, after all the hardships you have gone through, you are hit with such unspeakable betrayal from ther guy who sent you on a sucidial mission, its so shocking and infuriating. sure, you can get yourself a little revenge here, but, just like master moments ago, you will soon realize that the other side was right. and thats the beauty of the ending.
it rhymes