This weekend I finally played David OReilly's Everything. (I tried a pre-release build a couple of years ago, but I had trouble with the controller and gave up almost immediately. This time I played all the way through, or at least to what I can call an "ending".)
Spoiler warning: I am about to start talking about the ending ("ending") of Everything, and how it is constructed. I'm going to go into detail. So if your kink is surprises, buy Everything and play through it before reading this. It won't take you too long.
Death of the Author warning: I am about to start talking about the intent of games by seeing how they are constructed. Indeed, I will be making assumptions about how the design evolved. That is: I will be reading games as texts. I realize it's perfectly possible to go find the designer and ask what they intended, or how the game evolved -- but that's not the point here. That is not, as Alan Watts says in Everything's adopted narration, the game we're playing.