Metin2

Experience points are earned every time the player kills enemies or completes a mission from an NPC.

The in-game currency is called Yang, used to purchase items from the different NPC's.

A positive rank is acquired by killing monsters with a +-9 level difference than the player.

The rank points also automatically increase if a player spends time outside a safe zone.

Having a positive rank increases the possibility of obtaining items from monsters or metin stones.