Nintendo's latest mobile effort debuts on September 27, and they rolled out details about the game in a Direct earlier this evening.

The unnamed main character is a Pactbound, a human who formed a pact with a dragon known as Midgarsormr, and is the seventh in line to the throne of his kingdom. The Kingdom of Alberia is protected by Sacred Shards, whose powers are fading.

The game is an action RPG with a four-character party, that features direct control. Tapping attacks foes, and an onscreen skill button will fill in combat. Swiping allows for dodging, and characters can be switched on the fly. Boss battles feature an overdrive meter that fills in combat and is lowered by the characters attacking the boss.

The player and their party can transform into a dragon, either by picking up crystal drops or destroying Dragon Obelisks. Multiple varieties of dragons will be present, with all sixty+ (at launch) possible party members able to summon them.

Four types of units are in the games: attackers, healers, defenders, and supporters. A weapon triangle (fire beats wind, is beaten by water) is present, as well as dark and light beating each other.

Characters can grow by gaining experience, finding new weapons (or strengthening existing ones), a "Mana Circle" that increases skills and stats, or "The Halidom" - a castle with mining and altars for enhancement abilities.

Summoning is used to pull items, characters, and dragons. Characters and dragons have rarities from 3 - 5, and duplicates are turned into an item called Eldwater to unlock higher rarity levels for characters. Wyrmprints are tailsmans that are used for character enhancement. Two types of currency are used for summoning: wyrmite (free, earned through gameplay) and diamantium (paid).

Four players can party up in multiplayer, with all single player quests available. Special multiplayer events are also planned.