Judge is a Game & Watch game released in 1980. In the game, two judges face off by trying to attack the other when they have the highest number on their sign. When one judge attacks, the other will be able to dodge.
An error would often times occur in the game's multiplayer mode. If the second player got the highest number but ran, player one would get two points, though if the first player did so, the second would only get one. This was addressed in a leaflet and was taken out in the game's re-release.
In the Super Smash Bros. series, Mr. Game & Watch's side-B attack makes him attack with a weapon containing a number from 1 to 9, having different effects. The number 1, probably representing the fact that you couldn't win with it in Judge, makes Mr. Game & Watch damage itself. Other effects include freezing, burning and making food appear. The number 9 is a powerful smash attack.