Death - Fire Emblem Wiki

Permanent death (Japanese: ロスト loss) is a unique aspect of gameplay in the Fire Emblem series. While other role-playing games may allow the player to revive or otherwise heal fallen party members, Fire Emblem is unique in that any time a unit's HP is reduced to zero, the character completely dies and can no longer fight in-game, requiring the player to restart the chapter if they do not wish to lose the unit. A few games have offered rare and limited ways to revive a deceased unit, and modern Fire Emblem games from New Mystery of the Emblem onward have allowed the conditions of permanent death to be changed as part of selecting the game's difficulty.

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