Whether free to play or premium, these are some of the best RPGs on mobile.
Eternium: Mage and Minions (iOS, Android)
Promising no pay-to-win mechanics and the gameplay of Diablo and Torchlight, Eternium: Mage and Minions is solid, visually appealing action RPG experience. Though the range of playable classes seems limited, new content is added on a regular basis. There’s also a decent end-game system with Champion Levels and the Trials of Valor mode to battle through. The antagonist being named Ragadam might take some getting used to though.