What is the most old school game out there?

I am tlaing like '70's games, you know like Packman etc. whcih do you think is the most old school?
I say Pong, it is a cool game.

Tennis For Two

I got a bunch of arcade games from 360's live arcade. double dragon, and streets of rage 2 are AMAZING. then ninja turlets B)

multiplayer mayhem

Space invaders; this thread will be short or will repeat itself real soon since there aren't that many old school games.

"I got a bunch of arcade games from 360's live arcade. double dragon, and streets of rage 2 are AMAZING. then ninja turlets B)

multiplayer mayhem"

Technically, Pac Man is an 80's game, not a 70's game.

Pong.

"jimbojones said:

"I got a bunch of arcade games from 360's live arcade. double dragon, and streets of rage 2 are AMAZING. then ninja turlets B)

multiplayer mayhem"

Oh you youngsters and your 80's games..."

"Oldschool" in a sense of: Oldschool game in a current-gen shell that pretends not to be, but deep down is so old and wooden that it hurts: Twilight Princess.