stepmania - On music games like Osu! (mania), why are the inputs

In many rhythm games (like step mania, Osu! mania, etc.), the inputs are arrow shaped. Where does this "standard" of rythm/music games come from ?

vsrg · GitHub Topics · GitHub

Stepmania

rhythm-game · GitHub Topics · GitHub

10 Games Like StepMania: Similar Music Games 2022

Osu Mania V3

I made an updated version of my rhythm game difficulty chart (Can't please everyone) : r/rhythmgames

Osu! - Wikipedia

Stepmania

stepmania · GitHub Topics · GitHub

osu!mania long note animations don't play as expected · Issue #12207 · ppy/ osu · GitHub

Etienne recently made a community post. I rarely watch rhythm game content and I don't play clone hero so can someone elaborate on this paragraph : r/rhythmgames

10 Games Like StepMania: Similar Music Games 2022