I wouldn't consider Beat Saber an entirely new game mechanics. It seems like pretty standard rhythm game format with notes/beat coming towards you and requiring

I wouldn't consider Beat Saber an entirely new game mechanics. It seems like pretty standard rhythm game format with notes/beat coming towards you and requiring to activate corresponding input at the right time. Rhythm games have the history of having all kind unique and diverse input methods.Some of them quite physically demanding like Dance Dance Revolution style ones where you have to step on the dance pad.