The CTGP-N mod for Mario kart DS is a ambitious project that aims to add a lot of new content to the game. The original 1.0 release did not work on switch it would always crash to a black screen with the music still playing after the title screen. However the CTGP-N team put out a update...
I would absolutely love to play ctgp nitro on my switch do you have a separate GitHub fork I could download with the fix I don't even care if it's out of date