Secret Game - Super Xevious 
     Go  to  Xevious, then press Settings (2). Hit "Hardcore Options",
and   hit   Xevious   Version.   Choose  "Super  Xevious",  and  touch
"Confirm".You will now be able to choose Super Xevious from the arcade
and Score Attack menus.

     Super  Xevious  is  a  more difficult version of Xevious that was
originally given a limited release.


Dig-Dug 2 Old Version
     Go  to  the  Arcade  Menu then go to Dig-Dug 2. Go to the menu by
touching  the  screen  or  by pressing L+Start. Go to Settings (2) and
then go to Hardcore options. Press "New Version" and switch it to Old.
Now  when  you  go  to  the  Arcade  Menu you can choose Dig-Dug 2 Old
version.