The first Bemani game, and one of the first rythm games ever. beatmania [sic] is a DJ simulation game where you hit the keys in the rythm of the music to complete songs. A simple idea that has created very complicated gameplay as you progress.

This page covers the very first in the series that was exclusive to Japan, but released in the US as "Hiphopmania". It was released to the arcades first and then rereleased to the Playstation.