As a note -
Quote:
Originally Posted by seruji  ●Pop'n Music 15 Adventure ($1.50 per round. Unlocked [?]) |
If neu is unlocked (I seem to remember someone mentioning playing it), that's pretty much it.
Otherwise, you can tell at a glance by looking at the title screen - it'll say "MAX" on the top-left (IIRC) corner of the screen.