I saw that there were no verified runs in key mode and I wanted to try it, but the game mode doesn't seem to appear on my google snake game,

was it removed or do I need to do something to unlock it?

Yeah I cant see it either

I spoke the main google snake dev. Apparently there has been a rollback with the snake game. The mode should be back in a few days.

I will keep a lookout for that, thanks!