Question regarding Street of Rage 1, 2and 3 on iOS...

Ok I got these yesterday, and I read on a much older thread somewhere that you can play the Bare Knuckle versions of these games on the iOS versions...

Can anyone advise me on how to do this? There is no clear option in the menus or anything.

...I didn't want to post in the old thread as it is around 2 years old and has long been inactive, so I just thought I would post my question separately, hope that is okay.

EDIT: now found out how to do this...

...you change the language of the iDevice to Japanese.