Dragalia Lost

Dragalia Lost is one of the few Nintendo-made iOS games that are original in nature. Based in a kingdom where humans co-exist with dragons, players are given the chance to partner with dragon companions and unleash their power upon their opponents.
Dragalia adopts a standard mobile RPG model based on gathering heroes and leveling them up while progressing through a preset plot and competing with others. The game is free to download but has microtransactions to speed up tasks.