I remember when Super Mario Brothers first came out. My cousin was the first person I knew of who had a Nintendo Entertainment System. He had Super Mario Brothers (SMB) and The Legend of Zelda (Zelda). Both games used scrolling but in different ways. SMB had a scrolling background which moved left or right when you moved Mario or Luigi. Zelda, on the other hand, scrolled the screen only when you moved from one screen to the next.