Ok so i forgot the name of this ipod game name ?

And i woukd like to know what it is called i don't remember where i saw it. But the background was all black and they were like glowong lines and you had to move the ball side ti side if it fal down you would loose. Uhmmm i tried to remember the name of it but i couldn't remember hope i explain it well for you guys 10 points on how ever answers first :-D