Let's not thwack around the undergrowth here, Nintendo has done alright when it comes to mobile games. Super Mario Run is probably one of the best auto-runners on the App Store, and you can see why by clicking here for our review. And Animal Crossing: Pocket Camp and Fire Emblem Heroes are both solid experiences.
Now re-read that first paragraph. I just described two Nintendo games as “solid experiences”. That's not something that usually happens with the big N's output. Sure it might not throw out games left right and centre, but the ones that do come out are almost always top of their class.