What is an instance?
Instances are special areas where a set number of monsters will be spawned periodically, blocking the way to any player trying to enter the area. Typically, instances are also the homes of bosses dropping unique gear.
They are easily recognized by the red text saying "Reinforcement will arrive in...".
Instances are critical places to test one's player skill, and obtain high quality gear from bosses.
- 1v1 Combat
In instances, combat is dealt on a 1v1 basis. That means you won't be able to fight as a party against a monster, and will be on your own during all your fights.
As such, instanced fights are way more difficult than normal fights.
- Looting system
When someone, NPC or Player, lands the killing blow on another unit, all the equipped gear and inventory of the struck down unit is instantly sent to the killer's inventory.
As long as you aren't currently overburdened, you will get all the gear even if it bypass your carrying capacity.
You generally can't find monsters via exploring in instanced areas. There are exceptions of course.
Instead, a set number of monsters are spawned periodically according to a timer. The timer will only start going down once a monster of the instanced area is killed.
Once the timer has reached 0, the monsters will be spawned upon the next server tick. There is around 10min between each ticks.
Timers vary wildly, some counting mere minutes while other are set to a whole week.
- Forced Out
When the monsters of an instanced area are spawned, any player present in the area are forcefully teleported out of the instance, typically at the very beginning of the instance.