Most original game? Sorry, I disagree. There was a game before pong which is exactly the same thing. It's called Tennis.Vrex360 said:Pong obviously.
It was the first game to be made mainstream in arcade and later have a port to home computers. Pong's success is more or less the reason we even have a game industry.
Sure, pong is the most INFLUENTIAL game because there would be no game industry if Ralph Baer hadn't made it. But original it is not.
Originality goes to either Pac Man or Tetris for me. Two great games needing twitchy hands and a focused eye.