Take Mega Man 2, and then make it objectively better.

I am a musician because of this game.

Hilarious and Difficult.

This is the first video game I remember playing as a kid. My cousin showed it to me and I became obsessed. This is a perfect game for me, and I have beaten more times than I can count. (I've even beaten it on Hard Mode once... that took a while...)

When I was a kid, I subscribed to this youtube channel that made covers of my favorite Cave Story songs. I also was super into Rom Hacks of games and Cave Story mods too. It turned out that these two things would one day combine. NightMargin was that channel, and Michael Shirt made WTF Story. It's no wonder that OneShot became my favorite game of all time.