I have the DSTT and have been able to run NES, GBA, GBC, NDS,etc. games fine, even the majority of my SNES games work. However when I play games like Mother 3 it freezes whenever I get into a battle, and games like Seiken Dentsu 3 don't do anything after the start screen. The games still play the sound but in most cases no images show up, in the case of Mother 3 everything is there but I can't do anything, which is why I figured they were bad ROM's. I tried to find others but all the files I can find have the extension ".7z". I know the emulator can only run ".smc" games so I was wondering if there was a way to play the games with ".7z" or if I have to find ".smc" ROM's? Edit: I figured I needed 7-zip but I have a mac and 7-zip might not even be the answer, I'm not very tech savy.