Aeria games have opened up servers for the closed beta period of DK Online, giving players a chance to experience the game and help locate bugs to be fixed before the full launch of the game. The entirety of this MMORPG is available in the closed beta stage, which includes the massive PvP system.
To celebrate the start of the closed beta phase, Aeria has also unveiled a trailer for one of the PvP modes called Castle Siege. This mode involves one or more guilds sieging a castle held by another guild until one side comes out victorious and thus attains control of the castle until the siege timer resets and the castle can be attacked once again.
Source: Press release