Yes! There are no subscription fees for Combat Arms.
It is free to download and play.
Combat Arms also features a wide range of customization options for your character, convenience items, and more. These can be purchased with GP (in-game money) or NX (Nexon’s website-wide virtual currency).
For more information about NX, see the NX Guide.
The GP currency is free and earned by completing matches in game. Purchasing NX is optional and is not required for accessing the game.