: Copy your game’s original folder before moving any new files.
: Re-visit the page where you downloaded this; usually, the uploader provides a readme.txt inside the archive with specific instructions for their version. File: COS_RO2_DLC.rar ...
Knowing the internal file extensions (like .pkg, .txt, or .data) would help me give you more exact steps. : Copy your game’s original folder before moving
Look inside the extracted folder to see what kind of files you have: File: COS_RO2_DLC.rar ...
: Find where your game is installed (e.g., C:\Games\RO2\ ).
: Drag the extracted files into the main game folder. If prompted to "Overwrite existing files," select Yes (this is usually required for mods/DLC to work).
: These are patch files for Ragnarok Online servers.
