"Fire Emblem Heroes" has added new characters for players to look forward to. Ephraim and Eirika from "Fire Emblem: The Sacred Stones" and Seliph and Julia from the Japan-only "Fire Emblem: Genealogy of the Holy War" are the newest character.

"Fire Emblem Heroes" is a free-to-play tactical role-playing game developed by Intelligent Systems and Nintendo for iOS and Android devices. The game is a mobile spin-off of the Fire Emblem series and was released on February 2, 2017. 

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In this game, players can summon characters from the Fire Emblem series to attack opposing enemies. Players are free to create a team of up to four heroes to progress through the story or fight against other players' teams. 

「Training Tower」Thursday - Grab some Verdant Badges & Great Verdant Badges to raise your green 3★ & 4★ unit's star rating. #FEHeroes pic.twitter.com/QvBaqnKRFT

— Fire Emblem Heroes (@FEHeroes_News) February 16, 2017

According to GameSpot, the additions also bring with it a new focus, called Family Bonds, which influences what characters you will be able to summon. There is also a new story paralogue that carries the same name, giving you a handful of missions--and, by extension, new Orbs to earn--for a limited time.

En esta ocasión no deberás elegir, pues tanto Eirika como Ephraim de Fire Emblem: The Sacred Stones están disponibles en #FEHeroes. pic.twitter.com/OnJfmNYutG — Fire Emblem Heroes (@FEmblemHeroes) February 15, 2017

Completing the mission at each difficulty will also give players three orbs (nine orbs in total). This makes earning enough orbs for summoning new characters a little easier. It also means that players would not necessarily have to test out the "Fire Emblem Heroes" re-roll tactic to summon orbs without grinding, Gamerant reported.

The game's currency is known as "orbs" which can be used to acquire new heroes. Missions costs are between one and ten stamina to play while stamina is recovered at a rate of one point per five minutes, with a maximum of 50 stamina. Orbs are either earned by completing in-game activities or with in-app purchases.