The only control for my game is clicking the mouse. It's not the main "Only One" design choice that I was focusing on but definitely part of the experience. It's kind of an endless runner where, after a short intro/"tutorial" bit, the screen fades to black and you're left with only sound to guide you. I felt like anything more complicated than a one button control scheme would have detracted from the only one sense thing I was trying to do.
(Also its browser playable)