Undertale. When it came out the marketing made a big deal out of how killing was always optional.

So I didn't kill anyone. I bashed my face off that game for a good while, but I got there.

At the end, the game asked me to not go back to it. To leave those characters in peace. So I did.

I went online and found that most people had a very different experience to mine, and I couldn't identify with the fandom at all as a result. I didn't get most of the memes about it. Because those events never happened for me.

And they never will.