The cart, box and manual are reproductions from 2002 with permission of programmer Joe Gaucher.
A catalog picture shows a referee at the bottom of the screen. Although none appear in the version currently available, the graphics for him are in the code. There’s also at least one player animation graphic in the code that isn’t used.
Although technically speaking this still is a PAL game, the final version was meant to be released as a NTSC game.