It's from eyezmaze, a very creative flash game site that I've been visiting since a long time ago.
This time around the site owner (yes, I still don't know his name after so long >.>) has made this very... fun but... not so easy game for us to play!! 8DD all you have to do is to press A, S, D and F at the right times... but if you're only using the 4 fingers on your left hand, how well can you do?
Try it out XD My current highest score = 12220pt T.T;