Works perfectly !
This is only guaranteed to work on original system, should work on 90% of clone consoles BUT I DO NOT guarantee functionality on none of them. I know for sure it will NOT work on a RETRO FREAK and RETRON 5.

THIS GAME WILL HAVE SOUND ONLY IF YOU HAVE A NES FRONT LOADER WITH A AUDIO EXPANSION OR ANOTHER CONSOLE THAT HAS THE AUDIO EXPANSION . WITHOUT ONE THE GAME WILL STILL WORK BUT WILL HAVE NO SOUND.

I ALSO SELL AUDIO EXPANSION, SIMPLY PLUG IN NO SOLDERED REQUIRED