Super Pong was released by Atari in 1976. It was the follow-up to Pong, and contained 4 2-player games with two controllers fixed on the unit. It ran on batteries located on the base of the unit. Sound came out of the unit itself. For all intents and purposes it was like a 70's version of today's TV games that plug directly into the TV and run on batteries. Same concept except the batteries were bigger, and you had to share.