Yes and no. Some SNES games (as an example, since were talking Mario RPG) would receive 50Hz "ports", but they were often quite lazy, such as only adjusting le

Yes and no. Some SNES games (as an example, since were talking Mario RPG) would receive 50Hz "ports", but they were often quite lazy, such as only adjusting level timers but not character movememt. Some games originating in PAL regions, such as Donkey Kong Country, would have more work put into getting them to run right at 50Hz. But the vast majority would just run around at 5/6ths the correct speed and have huge black borders at the top and bottom. This was standard up until the PS2/Gamecube era, when gamers started catching on and demanding better ports or 60Hz modes. Then the shift to HD rendered the whole thing moot. Mario RPG and other SNES RPGs not receiving PAL releases or receiving them very late probably had more to do with translation of such text-heavy games. I believe Nintendo at the time had a policy that all (big-name?) PAL releases would have to be translated into several major European languages. This was an issue around the PAL version of the Gamecube Animal Crossing game that was reported at the time, although that eventually did receive a release IIRC.