Ghosts are mystical opponents that periodically appear on the Global Map. You can banish Ghosts with the help of a Shaman and receive valuable items, resources, and, most importantly, rune fragments as a reward.

A Ghost's health is determined by its level. Level 1 Ghosts are the most vulnerable, level 6 Ghosts are the least vulnerable. The lower a Ghost's level is, the easier it is to destroy it. All Ghosts are marked in purple on the Global Map.

In the "Invaders, Ghosts, and bonuses" tab in the Events window, you can find out which Ghosts are currently on the Global Map.