As there are no known differences between the original "Ball" from 1980 and the Club Nintendo rerelease from 2010, either may be used. However, in case a future difference is discovered you must clearly indicate which one you are using. This can be done showing the back of the game, as relevant information is displayed there. Only the two versions mentioned above may be used – no emulation or counterfeits are allowed. The score displayed at the end of the game is your final score.