Well this game is addictive and incredibly fun (in my oppinion) if uve ever heard of dance dance revolution u know the concept, if uve ever played Frequency u will do good... the game is called:
Flash Flash Revolution

you basically hit the arrows they tell you to hit on your keyboard but... its.. funner than it sounds..
http://www.ffrserver2.com/indexwrap.html
have fun!

My sig won't show =/