Osu!

[Shippo the Fox]

http://osu.ppy.sh/

Yes, I just found out about it from VGcats. So sue me. Either way, if you haven't, its an awsome game especially if you love Rhythm games and Elite Beat Agents.

[Nelon]

Wow that's really ool. I'm downloading. And I notice they have Caramelldansen. :)

[Zaotsu]

I remember trying it out a while ago, I didn't like it as much as the actual DS games though. It felt a bit too awkward with the mouse, although I'd definitely play it more if i had a tablet.

[chrome]

Trying it out now. Looks really fun.