Once a player reaches LV36, he/she can enter the Demon Prison instance. This is a dungeon where multiple powerful bosses respawn endlessly on their designated positions. Participating players will earn specified Participation Rewards while the player with the most damage dealt will earn Ownership Rewards. Players who are above Re.1/LV.1 can participate in Cross-Server Demon Prison instances. Also, take note of the instances with the “PK” tag. This means that you might encounter hostile players and may be forced to get into PvP.
There are no revival restrictions when fighting Demon Prison bosses; you can revive as often as you but since dying will reset your damage, try to fight bosses that are within your level/CP range to get more chances to get the Ownership Rewards. Each time you defeat a boss and collect the reward, a reward chance is consumed. Once all reward chances are consumed, you won’t be able to obtain any reward. You can have a stack of 6 reward chances but 1 reward chance is recovered every 2 hours.