Hey, wait a minute, why would you need the SNES buttons for players 3 and 4? Seriously, how many SNES games used 4 players? I'm not even sure if they sold a 4-player splitter for the SNES (it seems like they did, although I could be mistaken). If you had a 6-button fighter setup for players 1 and 2, then you would only need 3 or 4 buttons for players 3 and 4.