It depends of what you're talking about ? :)
On Mame u need to use TAB, on real MVS hw u need to manipulate the DIP switches ^^.
Or you can play the AES version of the game which contains OPTIONS into the main menu ;-)
GL
ok thanks. I'm playing on mvs and it starts me with zero lives so after I die it's over. But thanks I will try to figure it out.
join our discord channel and we'll be able to sort it out! ;-)