If you haven't played them yet, Dragon Quest and Final Fantasy I-VI are all available on mobile app stores. DQ IV-VI in particular are very charming and hold up well (imho!).
If you're more of a western RPG guy I believe Icewind Dale and Baldur's gate are on there too.
If you're more of a western RPG guy I believe Icewind Dale and Baldur's gate are on there too.