To all JD owners out there: can you confirm if is possible to play Supergame with multiple players?

When I start a Super Game I cannot seem to add any players using the Supergame button, neither before the first ball is launched nor during the first ball. I can add regular game players using the Start button. The game is set to Free Play running the L-7 ROM.

On a side note, I've also noticed that when Pinsiders discuss Judge Dredd, and on the official apron insert cards, the multi ball quantities are different to mine. For example, Supergame modes are apparently 2-ball but mine are 3-ball. And regular multiball is apparently 4-ball but mine is 6-ball.

Is this because most people are using the L-1 rom for the Deadworld lock mod, and this was changed in later ROMS such as the L-7 that I'm running?

That's what I thought too but if I press the start button to add more players, these players are standard game only, not super game players.

Interesting … what ROM version do you have? My supergame modes start with 3 balls and the other 3 launch upon completion of the JUDGE targets.