This is not only due to the maps but to the design of the walls and the hit notes. There's also the fact, as stated, that the game is more prone to being akin to dancing. Oh boy, the only thing that makes me sweat more in VR is boxing, and I dislike those games. Even Beat Saber's own originals can't compare to the quality of the mapping imho.
Small library, but it's an early access game (has been for over a year) yet I don't seem to get tired of their great selection and absolutely perfect mapping.
