Coming to North America soon under the name of Aura Kingdom, the original Taiwan server got updated today with the awesome Sky Tower raid dungeon. This is a 40-man raid dungeon, opening only every Saturday for 2 hours, with each players having 20 chances of entering.
The requirement is level 60, and I am not sure how many levels the current version has now, although developer X-Legend did mention about 100 levels previously. There is a storyline about a “sacred object” right at the very top which will grant immortality, but of course, no one really knows…
