Players control two male figures who hold hammers in their hands and hold up numbers. The one with the higher number must attack, and the one with the lower number must flee. An attack may be performed before the number is held up, as a gamble.

The game Judge has two versions: Green und Purple. But the game Judge counts as one game. Nintendo released Judge Green first. But soon they discovered, that the gameplay has an error. This was addressed in a leaflet. That’s why Nintendo released the Purple version of Judge with the problem solved.