LogFAQs > #932587304

You can't really just dump a DS game on Switch. Most DS games use the touch screen. And the only way you could do that on switch is by playing undocked. And if you're playing undocked, the tall DS screens would be fitted into the horizontal switch screen and you'd have a ton fo black space on either side. And if you turn the Switch screen to show the DS screens vertically, then you can't attach the joy cons to the sides of the system. And if you can't attach the joy cons, then you'd have to hold the screen, the separate joy cons, AND still have a free hand to operate the touch screen.

So it wouldn't work.