Osu, Just kidding, before when I knew osu searching up "rhythm" or games related to music, is that I play mobile games such as Cytus, and Love Live Idol Festival (but the bang dream one is harder one). Right now I am playing a new one which is Arcaea which is a good one to have fun in my perspective.
My first rhythm game was Super Hexagon on PC, it was the first PC game I ever purchased and it ignited my love for rhythm games. Deemo, Geometry Dash, Cytus, osu!, etc.
Actually osu, i was 7 years old when i first registered and i really liked the concept. Still holds up to me, my second and last one was geometry dash.
My family had two Dance Dance Revolution games on the Xbox when i was very young, around 3-5, so those would be the first rhythm games i ever played. I wasn't very good at it though. I remember i'd just sit and listen to the songs until the game decided i was too awful to keep going. I really liked the song "Candy".
My first rhythm game was Geometry Dash (I think I rather would consider it as a music game, because it doesn't have that many rhythmical elements in it). But even tho I really enjoyed playing it. Lately GD's community seems dying because the game isn't getting enough updates...
my first rhythm game was geometry dash, but only with the project diva series did i fall in love with rhythm games and a short time later i found out about Osu ^^
I see lots of Guitar Hero on Wii and it's prob the same for me along DDR (on PS2) that I played when I was a kid. There's also lots of Geomatry Dash, another game where I spent lots and lots of time. And now I'm on osu!mania, one of the game where I put probably more time than other games ecept for minecraft or brawl stars lol.
Guitar hero on the wii for me and when I begin high school in 2016 , I saw someone clicking on circle and I was ''Woaaa'' and after I guess I have started playing osu! since 2016 ? xD