What is NX? Follow NX is virtual currency used in all games serviced by Nexon America, Inc. NX can be spent to purchase in-game items, accessories, and services. For help purchasing NX, see How to Buy NX? For more details on NX restrictions, see NX Restrictions. Related articles How to Buy NX How do I enhance equips with Star Force? What is an Open Advancement? Linking Nexon and Steam Accounts How do I change my character name?