Click the Play button on the top left corner of any page on the Combat Arms website.
Log in with your Nexon ID or register for a free account.
When the download pop-up appears, click on "Run" to begin downloading or "Save". Open the downloaded file once it has finished to begin installation.
The Nexon EULA window will pop up. Click on
Confirm the folder destination where Combat Arms will be installed. Click on "Install" to start the installation.
Once the installation is complete, click "OK" to close the window.
If you choose to bypass the Combat Arms Downloader and want to download Combat Arms directly, click on the link on the Game Client & Updates page directly under the Downloader button.