In the pre NES days, marathon gaming sessions were tough on a body. No pause button, you see. No way to freeze your game in time while answering your body's unrelenting needs and functions... so to speak. When the Atari 5200 was released as an upgrade to the 2600, one of the major system features was the first ever "pause". This feature was carried over to Atari's next opus; the 7800. I remember being excited since the 7800 also played all of those 2600 classics, but alas... Only newer 7800 games programmed to take advantage of the pause worked. 2600 endurance gluttons still had to save up free lives and run full speed to the bathroom during a gaming session.