It looks like it says "PRESS 0 TO START" but it's a C. I know my eyesight isn't great but I can't see how it looks like a C :(
Indeed. This is why I always mix it up; I'm not choosing or thinking about them especially. :P I'm pretty much determined that next time I'll just put the letters in the game, though, or perhaps both. It annoys Pico-8 folks but that seems worth it in order to make it so other people can figure out how to play!