Werdna's Revenge
Cipher
I played and enjoyed the first couple of Pokemon Gens back in the day so still have some fondness for the series. They are an actual good "intro to RPGs" series I think. Just enough party building, leveling, and meaningful optimizing to get people invested, but they're still pretty easy and short games. I've heard of the Nuzlocke thing, might be worth revisiting the games doing something like that, but once you've played stuff like SMT I don't really see what else Pokemon offers you other than nostalgia & cute monster designs.