Osu!

“Osu! is primarily played using a mouse to click ‘beats’ displayed on-screen in time with the music. This is analogous to tapping the beats on the Nintendo DS screen with a stylus. At the top of the screen, a health bar is present, which is constantly drained. If the player hits or clears a beat, the health meter at the top of the screen fills slightly. If he misses a beat, a large part of the meter is drained, and if it gets completely empty, he fails the song. There are three types of beats in the game: Hit circles, sliders and spinners.” -From the Osu! website

A note from us…
What makes Osu! 5 star worthy is not so much the game play (although it is fun), but the vast amount of songs available to download (called beatmaps) from the developers website. The only downside is you need to create an account before downloading any songs, and trust me you will want to download songs. It comes with next to nothing other than a stupid tutorial. This game also has a lot of options, so you can configure it just the way you want it to look. Find the beatmaps in the link below. You might want to see if your favorite songs are there (just to make sure) before downloading.
Osu! Beatmaps