The reason why it was not released to Europe is that the American and Japanese SNES component was very similar, Due to the construction of analog TVs, in Europe it was the PAL region, which used 25fps, in America and Japan they used NTSC televisions that used 30 FPS, that's why the SNES in Europe was very different, so it had to be adapted from the original version, in addition to the CHIP SA1 that uses Super Mario RPG, it had improved RAM and improved clock speed, towards that it was more fluid, also as the launch of N64 was close, it was expensive to adapt the game for the European audience, this was the real reason that Super Mario RPG.