In "Fire Emblem", the player moves units across a grid in turns. The player must deal with a challenge with each part in the story, for example, defeating all of the enemy units. A player may choose to fight, move, heal, or visit shops each turn. The battle system is made up of two units fighting each other with their selected weapon. Some weapons are better against others. For example, swords are better against axes. When units defeat others, they gain experience. This experience is used to "level up" the units and makes them stronger. A well known feature in "Fire Emblem" is that when a character is damaged very badly (loses all of their "hit points"), they can never be used in the game again.