In The Elder Scrolls Online, Dungeons are special instances that players are able to interact with. They always contain one or more bosses, large amounts of enemies and loot. Dungeons may also contain chests, quests, skyshards, ingredients, collectible books and other items. While Dungeons are usually not actual dungeons, the term has been universally used by many other MMO and RPG players to refer to any kind of indoor or outdoor instance that is separate from the main world.