Elden Ring Seamless Co-op Mod: Complete Installation and Setup Guide

This post explains how to set up and use the Seamless Co-op mod for Elden Ring, making your solo adventure a fun group activity.

With this mod, you get to explore the entirety of the Lands Between together, battling fearsome enemies and conquering challenging bosses side-by-side

How to Install the Seamless Co-op Mod:

Prerequisites

• Ensure you have an account on Nexus Mods, as you will need it to download the mod.
• Make sure Elden Ring is installed on your system.
• Download and install a file extraction tool like WinRAR or 7-Zip, if you don’t already have one.

Steps

1. Download the Mod:
   • Head over to the Seamless Co-op mod page on Nexus Mods (created by LukeYui).
   • Click on the ‘Manual Download’ button, and choose the ‘slow download’ option (unless you have Nexus Mods Premium).
2. Extract the Files:
   • Once the download completes, use your file extraction tool to open the ZIP file.
   • Extract the contents to a convenient location, such as your desktop. The extraction will yield the following key files/folders:
     • The Seamless Co-op folder: Contains all the mod files required to enable multiplayer functionalities.
     • The launcher: A separate game launcher to start Elden Ring with the mod active.
3. Locate Elden Ring Directory:
   • Open Steam, and navigate to Elden Ring in your Library.
   • Right-click on Elden Ring, select ‘Manage’, then ‘Browse local files’. This will take you to the game’s installation directory.

4. Install the Mod:
   • Drag the extracted Seamless Co-op folder and the launcher into your Elden Ring directory.

5. Create a Shortcut:
   • Right-click on the new launcher (launch_eldenring_seamlesscoop.exe) in the Elden Ring directory.
   • Choose ‘Create shortcut’.
   • Move the shortcut to your desktop for easy access.

How to Use Seamless Co-op Mod

Set Up Co-op Settings

1. Open the Seamless Co-op folder in your Elden Ring directory.
2. Find and open the cooppassword.ini file.
3. Set a multiplayer password that you’ll share with friends you want to play with.
4. Save and close the settings file.

Playing the Mod

1. Start the Mod:
   • Use the desktop shortcut you created to launch Elden Ring with Seamless Co-op.
2. Hosting a Server:
   • Ensure you’ve rested at the first Site of Grace.
   • Use the Seamless Co-op-specific item provided by the mod to host your world for friends to join.
   • Share the set password with your friends.
3. Joining a Server:
   • Use the Seamless Co-op-specific item to join your friend’s world.
   • Enter the password provided by your friend to join their game.

Playing Your Original Profile on the Mod

1. Find Your Save Files:
   • Type %appdata% in your search bar and navigate to AppData\Roaming\EldenRing.
2. Backup Save Files:
   • Copy and backup these files to avoid data loss.
3. Convert Vanilla Save for Mod Use:
   • Copy your vanilla Elden Ring save file (ER0000.sl2) to your desktop.
   • Rename the file extension from .sl2 to .co2.
   • Replace the current .co2 file in the mod’s save folder with this file.

4. Load Your Profile:
   • Launch the game via the mod’s launcher.
   • Your normal Elden Ring saves should now be accessible within the mod, letting you play your original profile with friends using the Seamless Co-op mod.

Final Notes

• Always back up your saves before modifying game files.
• This mod allows Elden Ring players to enjoy a more cooperative gameplay experience without the risk of standard online penalties.

That’s it. With the Seamless Co-op mod installed, you can collaborate through Elden Ring, share victories, face challenges with your friends, and conquer the Lands Between as a team!