Bosses

The term "Boss" might refer to one of the following:
 * World Boss - Bahamut,
 * Wilderness Bosses found in almost every location on the map,
 * Dungeon Guardians found in dungeons,
 * Purgatory Abyss encounters that happen every 5 rooms passed,
 * Alliance Boss encounters summoned with Nightmare Crystals,
 * Zombie King encounter during weekly alliance Zombie War.

Wilderness Bosses
Encounters with wilderness bosses are different to the dungeon guardians encounters. Each wilderness boss can be fought by a multiple number of players, each of whom has the chance to get an item, silver and experience associated with the specific encounter. Each wilderness boss battle consists of 3 battlefields (A, B and C) which in turn can have multiple enemies. Players may join in one battlefield or split among the battlefields based on their own strength. Each boss' encounter strength is based on the combined formation strength of all the enemies in the battlefields.

List of wilderness boss encounters

Dungeon Guardians
In each dungeon players encounter two sidebosses and one main boss. Due to the fact that for each difficulity level of dungeon the encounters may differ, for more information on specific dungeon guardian, please consult the subpages of the Dungeons section of the wiki.

Purgatory Abyss Bosses
Players encounter fights with Boss-like monsters every 5 levels on each layer of the Purgatory Abyss. For the formations and discovered loot of bosses, consult the Purgatory Abyss section of the wiki.

Alliance Bosses
Alliance Bosses are accesible through the Science Officer in Alliance Panel. Based on contributions of Nightmare Crystals of alliance members, leaders may summon one of the bosses. Level restrictions apply: if player's level is more than 20 levels different from that of the summoned boss, the player gains no reward. The rest of participants receive a treasure chest corresponding to the summoned alliance boss.

Zombie King
Zombie King encounter might attack one of the Alliance's controlled cities during weekly Zombie War.