Yeah I'm aware of the Hori pad. I don't think they were released outside Japan. They can also be pretty expensive nowadays.
adjl posted...
I don't remember, could you hook up a GBA to a Gamecube and use that as a controller while using the GB Player?
Apparently you can? I definitely wasn't aware of this back then.
https://www.youtube.com/watch?v=_SvSPu3qGD0