Hi, does anyone know if an NPDP-GDEV is compatible with a regular gamecube controller? Or do you need a prototype GC controller? Thanks.
Depends if you got the alpha model or beta/final model. If you see a 4-pin connector on the front that's RJ11 (looks like old phone line cable) then it will only take 3/4 quarter (and older) development pads.
That's a final. I don't think any GDEVs were produced with anything other than the regular controller connector, anyway.