So I downloaded Nestopia but don't know where to actually download the file for SMB1. Where should I download it?

you have to get the rom for the NES game you want to play; search for it on google basicaly, is simple to find and download; note that for legal stuff we cannot officialy share our roms with you face to face, so don't ask for the rom or for direct sources otherelse

when getting it, make sure you get the correct version, difference betwen NTSC and PAL (generaly you want to use NTSC as the standart and most hz version)

ok thanks! didn't know about the legalities, but i think i found a rom that works. also, the rom i downloaded didn't say whether it was ntsc or pal, so is there a way to distinguish the two?

what is the name of the rom?

NTSC runs at 60fps, PAL at 50fps, that's the main difference betwen both; idk rn a direct way to know it but you can test that if the name doesnt give any info

Most of the time the smb1 rom that is NTSC will have "(World)" in the file name, the PAL version will usually have "(E)"

If you aren't sure, boot it up. Listen to the music and then compare it to one of the videos on the leaderboard. If the music is noticeably faster on yours, then you are likely on the PAL version, unless you have the game sped up for some other reason.