Ultima Online: Age of Shadows (J)
http://redump.org/disc/112267
This disc is used for both the Original (Full Game) and the Upgrade (Add‑On), with the serial number indicating the difference. In that case, would the category fall under “Games”?
EOL-7020: Includes a serial for the full game (Original)
EOL-7021: Includes a serial for the upgrade (Upgrade-ban)
DWOMS-00162: Includes serials for both the full game and the upgrade (DigiCube PC)