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|Developer(s)||MGame Corporation, Noahsystem|
|Release||15 July 2002 (KOR)
17 August 2004 (USKO)
26 January 2016 (Steam)
The original game is hosted by MGame in Korea, and requires players to enter their Korean resident registration numbers to register. There are three other official versions: Knight Online Xross (usually called "JPKO") is hosted in Japan, while Knight Online World (usually called "USKO") is hosted in the United States, and Knight Online Europe (usually called "EUKO") . All of these versions accept registration from any location.
Knight Online is officially free-to-play (although to connect to the utmost of the servers during prime time, paid premium is required), but there are some features that must be paid for. In addition, there is an in-game Powerup Shop or Store which contains various items that one can purchase such as premium packages. Paid services include exclusive items and Premiums which are a limited-time subscription providing many benefits.
The player controls a virtual character. After connecting to a server for the first time, players must take sides, choosing either El Morad or Karus. The two nations are equivalent but have different appearance. Once the nation is decided, it's a difficult and expensive process to switch nations. To create a character, the player must choose (depending on the nation) a race, from Barbarian, male/female El Moradian, and the four Tuarek races that inhabit Karus. Following that, a class must be selected for the character along with a few appearance options. Finally the character is named and given its first 10 Stat Points.
To advance in the game, the player must collect experience points to gain levels and items that boost the stats of the character. The monsters that inhabit the game world can be attacked using melee attacks or skills. Once a monster is killed, the killing player gains experience points and the monster leaves behind a loot box which may contain Noahs (in-game currency) and other items. The drop box is only accessible to the player or party that did the most damage to the monster. However, in case of kill stealing, the experience is divided according to the amount of damage done.
Most items can be traded between players. The game's merchant feature allows the player to set up a kiosk to sell or buy items for Noahs. If a player has enough Noahs or the item sought for, he can enter the kiosk and perform the exchange. The transaction is done automatically, so the merchant doesn't have to be at the computer when the item is sold or bought. Bartering is also permissible using the trading option. This allows two players to exchange multiple items and/or Noahs between each other. Since a player can't hold more than 2.1 billion Noahs, players often exchange several items for a very valuable item. Each server has specific economies and equilibrium point for most valuable items.
Each character belongs to one of the two nations of the game: El Morad (humans) or Karus (orcs, although the game calls them "Tuareks"). Knight Online has four character classes available for both nations: Warrior, Rogue, Mage, and Priest. Each class has a basic skill set, three main skill sets (after 1st job change), and one master skill set (after 2nd job change).
As in most MMORPGs, Knight Online enables players to group together and complete objectives. Parties in Knight Online range between having two to eight players. The characters must be in a certain level range of the party leader in order to be in the same party. (However, a clan member may invite any other clan member regardless of level difference.) Party-members gain experience in accordance to their level. Knight Online encourages parties, since parties can collectively complete monster-killing quests.
The game is hosted on a couple of servers in each version. Servers are grouped into worlds. No characters or items may be transferred across worlds, but a character created in a world is available on all servers of the world. A player may create up to 4 characters per world on the same account. These characters have a common "bank" which can be used for storing items and Noahs.
Knight Online allows players to fight against each other in various zones. Some of these provide no rewards or risks, while in others players gain National Points and Leader Points (also called Ladder Points) for killing enemies, but the defeated player loses some of these points.