by QwertyChouskie » 07 May 2019, 20:10
As far as I know, STK does not natively support nunchucks at this time. Someone on IRC (sidious) was working on this a couple of months ago, but I haven't seen him for a while. You could try external software such as FreePIE/wjoy/MoltenGamepad, I have used MoltenGamepad in the past and it worked pretty well for me.
Contributor to/fan of STK (Upstreamed Cartoon theme, numerous random big fixes/tweaks)