An add is a creature that adds into an existing fight with you. "That Ogre is going to add." 1. * Any mob that happens by or spawns in the general area (sometimes by surprise) while one is already fighting the initial mob. Some people use the more specific and accurate term "pop" for when a mob spawns unexpectedly. 2. * Some game mechanics also allow what is sometimes known as "Bring A Friend" mob scripting. This is when a mob, when attacked, sends out a call for help to its mates and "brings a friend" to the party. Other related scripting exists that is similar in result but differing in specifics, as well. 3. * A third means of mobs becoming adds is a game mechanic where a various class of mob will send out scouts to spot enemy movement, just as a well-trained troop of soldi