Running the game
Various information on how to install and run the game.
Windows 7, 8, 10 (32 or 64 bit), or Windows 11
|Processor||1.6 GHz processor
Supporting SSE2 instruction set or higher
|3 GHz multi-core processor
Supporting SSE2 instruction set or higher
|Memory||1 GB||4 GB or more|
DirectX 9.0c compatible
Shader Model 2.0b compatible
|NVIDIA® GeForce® GTX 670 2GB or better
AMD Radeon R9 280 or better
|Storage||4 GB free space||6 GB free space|
|Display||1024×768 resolution||1920×1080 to 2560×1440 resolution, close to 96 DPI
60 Hz refresh rate or more
Broadband internet connection
Keyboard and mouse
Note: You may have to lower your game's graphics settings to achieve desired performance.
Note: The game may still run on systems that have sub-minimum specs, but some additional setup may be required and the performance may be not acceptable.
- Other operating systems currently are not officially supported, but the game may still run on Mac OS X or Linux, or older Windows systems with some additional setup.
- UI scaling is not supported at the moment, so playing on high-DPI screens is not advisable.
Installing the game
Ymirheim project does not distribute the original game made by Gravity Co., Ltd., because it can violate the copyright law.
You have to own your copy of the original game in order to install our mod and play on our server.
Alternatively, you can ask your friends or other players to share their client with you, but we don’t have the rights to assist you with that, sorry.
To install the game, please follow this procedure:
- Make sure that you have the files of the original game client. Any version of the Korean OBT client (for example, the latest version, “kRO2 Client v126”) should be perfectly fine.
Note: If you've modified your client previously to connect to other private servers (e.g. DiviniaRO2, YggRO2), please be aware that it may not be accepted by Ymirheim Launcher, although most players report that it worked fine for them.
In any case, Ymirheim Launcher will made sure that the client is valid before using it so if the installation went without any errors, you're good to go.
- Download the Ymirheim Launcher setup file, save it anywhere on your computer and run it. It's just an installer that will extract the launcher into your system properly (default installation path is
After the installation is done, you can delete the setup file and use the shortcuts on your desktop or the start menu to launch the game.
- Follow the setup instructions of Ymirheim Launcher:
- Select the folder that contains your original game client;
- Select the folder where you wish your game to be installed (it will be your main game client folder used to play on Ymirheim servers);
- Ymirheim Launcher will use the original game client files, patch them, and place the resulting files into the target directory that you selected. After the patching finishes, the launcher will update the game to the latest version and will let you start the game.
Selecting the game UI language and theme
The first time you launch the game, the launcher will ask you to choose the language and the UI theme for the game client.
To change these settings later, you can click the “Options” button in the launcher.
Currently, only two UI skins are supported: “Default” and “Gears”:
- Default is the usual “transparent” theme that was in the latest version of the original game, introduced in May 2008.
- Gears is a modified version, a tribute to the UI of the older version of the game (before May 2008).
Safe Mode (Minimal settings)
If your game client doesn't start or you're having trouble starting it with the default settings, you can start it in the safe mode.
Safe mode will set all your graphics options to minimal, the game will run in windowed mode 1024×768 without any shaders. This may help you to get to the graphics settings and set them to your liking.
To enable the safe mode, click the “Options” button in the launcher and check the “Start the game in safe mode” option. Click “OK” and start the game. This option will be reset back to normal as soon as you close the launcher.
Note: Safe mode doesn't reset some character-related settings. If you wish to do so, you can delete all the files in the
Documents\My Games\Ymirheim\Option folder.
You can help by adding to it.
File "System/RagII.exe" not found
If you see an error message saying that the RagII.exe file or any DLL file is missing, it usually means that your anti-virus software placed it in the quarantine.
We receive a lot of reports about false positives from our users (mostly from Windows Defender users) and we're working on multiple solutions to minimize the amount of false-positives. But for now, if you found out that your anti-virus placed one of the game files into the quarantine, you can:
- Add the game folder to the exceptions of your anti-virus software.
- Find the path to the game directory in the Ymirheim Launcher's "Options".
- Add the directory to the exclusions of your anti-virus software.
- For Windows Defender, go to your Security Dashboard (right click "Windows Security" icon in the system tray, select "Security Dashboard"), under "Virus & threat protection settings", select "Manage settings", and then under "Exclusions", select "Add or remove exclusions" and select the game folder.
- Additionally you might have to add the launcher's temporary files directory (
%APPDATA%\YmirheimLauncher\Temp) to the exclusions as well, since it's being used when it downloads the patches.
- Or pick a different anti-virus software. Among popular anti-virus solutions only Windows Defender causes such troubles.
- After that, perform file repair by clicking the "Repair Files" button in the launcher.
%LOCALAPPDATA%is usually located at
Documentsfolder is usually located at
%APPDATA%is usually located at