Strangest damned thing I've found today. Two copies of Sega Worldwide Soccer 97 PAL version: Both in the crap cardboard plastic cases (the standard PAL one), both with the same manual, disc art, same everything.
However, their ringcodes are different:
MK-81112P-01033 A
and
MK-81112P-01033 B
The B version has exactly ONE BYTE difference, in audio track #3. The ENTIRE disc is an exact match otherwise.
ONE BYTE.
What.
