Metin2

Metin2 is a Massively Multiplayer Online Role-Playing Game (MMORPG) originally developed by Ymir Entertainment (now owned by Webzen Games) and originally released in Korea in 2004. It has since been published in many European countries and in the United States by Gameforge 4D GmbH. Other versions exist in Asian languages.
Gameplay.
Experience points are earned every time the player kills enemies or completes a mission from an NPC. The game's combat is based on a Hack and slash system. Players can also gather groups of creatures and land basic attacks and skills on each one of them simultaneously while they are all attacking the character at the same time. The game has several different player character classes, all classes have 2 different sets of skills they can use, the skills can also be upgraded. There are many different maps, monsters, semi-humans, metin stones, armors, weapons, and accessories. Some Metins even have pets and different type of mounts.
The currency in the game is called Yang, used to purchase items from the different NPC's. Players can use this to trade with other players or to their own shop. Players can also make their own guild of fighters and guilds can have wars between each other.
Grade Points are used for a special kind of rank, the ranks are Cruel, Mean, Dishonored, Aggressive, Neutral, Friendly, Good, Noble and Chivalrous, each rank gives the player a different rate drops. The Cruel, Mean, Dishonored and Aggressive ranks also have a chance to lose items when killed. Items can influence the Grade Points.
Players can also use real life money to buy Dragon Coins, with which players can buy special items and bonuses.