Version Differences
From A complete guide to Super Metroid speedrunning
The NTSC version of the game was released in North America for the Super Nintendo, and in Japan for the Super Famicom. These two releases of the game use the same ROM, just with different plastic shells to fit the different consoles.
The PAL version of the game was released in most other regions of the world, and is most notable for running at 50 frames per second instead of 60.
