GBA Version Differences There is a Game Boy Advance release of the game, "Mega Man & Bass". The screen size is smaller, as it is for most GBA ports of SNES games. There is less vertical space visible, though it is still active. The music is...worse More relevant to speedruns, Werkinig notes the following version differences: New loading screens in GBA (though you do get some loading lag anyways in SNES) Aside from loading screens, GBA gameplay is largely if not always lagless, which can speed up some sections and make some areas safer, like the room after groundman refights Astro zip will softlock you in the GBA version