osu! is a 2D music/rhythm game where player must tap circles, slide balls and spin "spinners" following the rhythm of the song. It was created by Dean "peppy" Herbert in 2007 and by now its community has about 900 000 users.
osu!droid website: http://osudroid.com/
Official osu! website: http://osu.ppy.sh/
"Relax" and "Autopilot" mods
New graphical effects
"Advanced options" section