The Rock 'em Sock 'em Robots have been around since at least the
1960's, and there was a 35th anniversary edition recently
released. As cool as this game looks here, it was actually
kind of boring. Punch the other robot in the chin, and
"sproing" goes his head, about one inch into the air
(referred to by the game players as knocking the other player's
block off). This
was pre-Atari, people.