In short: v65536 is almost certainly a or artistic choice — not a real version.
Specifically fixing an issue where using Mallow's "Thought Peek" on certain enemies, such as Straw Head and Reacher, would not function correctly.
The v65536 tag is particularly interesting because it points to an in how version numbers are stored. Super Mario RPG -0100BC0018138800--v65536--US-....
SNES ROMs contain a 512-byte header at $7FC0 (lorom) or $FFC0 (hirom) with maker code, game code, and checksum. The string 0100BC0018138800 could be a raw hex dump of a portion of that header if misread as ASCII.
This 16-character hexadecimal string (including letters A–F) is suspiciously long and specific. In short: v65536 is almost certainly a or
This is clear: (NTSC-U/C). Super Mario RPG was released in North America on May 13, 1996. The Japanese version (SFC) is “JPN,” and a PAL version never officially existed due to localization complexity and timing.
However, later Virtual Console releases (Wii, Wii U, 3DS) and the Nintendo Switch Online version retain regional distinctions in their metadata. SNES ROMs contain a 512-byte header at $7FC0
: If you are looking for gameplay secrets, players have discovered a classic "secret code." By pausing the game and entering Down, Up, Right, Left, L, R, L, R, B , you can trigger a small easter egg, as noted by creators on YouTube . Key Game Details