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Download Serein MMO

Choose the full client if this is your first installation. If you already have the game installed, download the launcher only.

Client Size 17.3 GB
Recommended Space 25 GB Free
Operating System Windows 7+
Connection Stable Internet
Full Client

For new players or fresh installations. Includes the full Serein MMO client.

Google Drive - Updated
Launcher Only

For players who already have the full client and only need the latest launcher.

Google Drive - Launcher
System Requirements
Minimum
  • OS: Windows 7 SP1 or newer
  • Disk Space: 25 GB free space
  • Memory: 4 GB RAM
  • Graphics: DirectX 9 compatible GPU
  • Internet: Stable broadband connection
Recommended
  • OS: Windows 10 / Windows 11 64-bit
  • Disk Space: 30 GB+ free space
  • Memory: 8 GB RAM or higher
  • Graphics: Dedicated GPU recommended
  • Internet: Stable broadband connection
Installation Guide
  1. Download the full Serein MMO client.
  2. Extract the client to a folder such as C:\Games\SereinMMO.
  3. Do not place the client inside Program Files.
  4. Run the launcher as administrator.
  5. Wait for the launcher to finish patching.
  6. Press Start Game.
Common Fixes
  • Run the launcher as administrator.
  • Add the Serein MMO folder to your antivirus exclusion list.
  • Make sure Windows Defender or your antivirus did not delete the launcher.
  • Install DirectX 9 runtime if the game does not open.
  • Re-download the launcher if patching fails.
  • Make sure the client folder is not read-only.