Using Seamless Coop with other mods.

INSTALLATION GUIDE:

This guide will go over using Seamless Coop in conjunction with other mods.
If you want Seamless coop with no other mods follow How to install instead.
For optimal experience, all players should use the same mods together - with the exception for visual mods, which can remain personal.

IMPORTANT NOTE: Mods have to be compatible with the version of Elden Ring you’re using.
Typically only the latest version of Elden Ring is supported, and if the mod has been abandoned you will not be able to use it.

IMPORTANT NOTE: All players must use the same mods in order to connect to each other.

NOTE: This guide was written with file extensions ENABLED.
If some file names do not match what you’re seeing, please turn this setting on in File Explorer:

A guide on how to setup Seamless Coop with ModEngine 2 + other mods.

Required

You MUST launch Seamless Coop with either ersc_launcher.exe or ModEngine2.
DLL injectors like Elden Mod Loader and Lazy Loader won’t work.

Files you need

Seamless Coop and ModEngine2.

Make sure that you have:

Setup (Click on the steps to show their content)

1. Where to put the files.

1.1 Extract Mod Engine 2 using your prefered file archiver. Like 7zip as an example.

1.2 Rename the folder ModEngine-2.1.0.0-win64 into ME2

1.3 Place the ME2 folder into your Game folder.

Where is my Game folder

Browser local files in steam.

Open Steam
Right click Elden Ring
Go down to Manage
Click on Browser local files

This will open your Elden Ring folder and inside it is the Game Folder.

You can pin the Game folder to Quick acces
by right clicking the Game folder -> Pin to Quick acces.
Which will make it available in the left side of the file explorer under Quick acces.

1.4 Go back to where your Seamless Co-op v1.x.x.zip is located and extract it as well.

1.5 Open the Seamless Co-op v1.x.x folder and inside you should see a SeamlessCoop folder and a ersc_launcher.exe

1.6 Place the SeamlessCoop folder into the ME2 folder that is in your Game folder.

1.7 You can now delete the files unrelated to Elden Ring from the ME2 Folder.
They are config_armoredcore6.toml, config_darksouls3.toml, launchmod_darksouls3.bat and launchmod_armoredcore6.bat

2. Set a Password and configure the ersc_settings.ini

2.1 Open your SeamlessCoop folder in your ME2 folder.

2.2 Open the ersc_settings.ini file with text editor of choise.

2.3 Change the settings to your/your groups liking and set a password.

[GAMEPLAY]

; Invaders are other players that will join your world uninvited and try to kill you and your party.  0=FALSE  1=TRUE
allow_invaders = 1

; Debuffs (Rot Essence) will be acquired when you die, and will only be cured when you sit at a bonfire.  0=FALSE  1=TRUE
death_debuffs = 1

; Spirit summons can aid you in multiplayer.  0=FALSE  1=TRUE
allow_summons = 1

; 0 = Normal | 1 = None | 2 = Display player ping | 3 = Display player soul level | 4 = Display player death count
overhead_player_display = 0


[SCALING]

; Amount of enemy health (%) per player for each enemy. (Default: 35 = 35% more enemy health per player)
enemy_health_scaling = 35

; Amount of enemy damage (%) per player for each enemy. (Default: 0 = 0% more enemy damage per player)
enemy_damage_scaling = 0

; Amount of enemy posture absorption (%) per player for each enemy. (Default: 15 = 15% more per player)
enemy_posture_scaling = 15

; Amount of boss health (%) per player for bosses. (Default: 100 = 100% more boss health per player)
boss_health_scaling = 100

; Amount of enemy damage (%) per player for bosses. (Default: 0 = 0% more enemy damage towards players, per player)
boss_damage_scaling = 0

; Amount of boss posture absorption (%) per player for bosses. (Default: 20 = 20% more boss posture per player)
boss_posture_scaling = 20

[PASSWORD]

; Session password
cooppassword = I Made A Password

[SAVE]

;Your save file extension (in the vanilla game this is .sl2). Use any alphanumeric characters (limit = 120)
save_file_extension = co2

[LANGUAGE]

;Leave this blank unless you want to load a custom locale file. The mod will default to your game language.
mod_language_override = 

2.4 When you are done Save the changes.

Note: Host’s ersc_settings.ini determines the world’s Scaling, Player Invasions, Rot and Spirit Summons.

Note2: You need to set the password in this location, When you are using Mod Engine 2 to launch the game.

Optional You can change the save file extension you use for a save depending on what mods you use.

[SAVE]

;Your save file extension (in the vanilla game this is .sl2). Use any alphanumeric characters (limit = 120)
save_file_extension = `co2`

Change where it says co2 into as an example Moddedco2,
then make a copy of your ER0000.co2 file and rename the copy into ER0000.Moddedco2.
This will separate Seamless Coop only saves and saves using other mods.
So you dont accidently open them up and lose a lot of modded items on those characters.

3. Setting up Mod Engine 2

3.1 Download the preconfigured Elden Ring ModEngine2 toml or configure it manually like the following example:

config_eldenring.toml

[modengine]
debug = false
external_dlls = [ "SeamlessCoop/ersc.dll" ]

[extension.mod_loader]
enabled = true
loose_params = false

mods = [
    { enabled = true, name = "default", path = "mod" }
]

[extension.scylla_hide]
enabled = false

3.2 Open your ME2 folder.

3.3 Paste the downloaded file from step 3.1 into it, overwriting the exisiting one.

3.4 IMPORTANT Go back into your ME2 and launch the game with launchmod_eldenring.bat this is so you crate a save file and update an existing save file to the latest regulation.bin version. THIS HAS TO BE DONE BY LAUNCHING ONLY SEAMLESS COOP WITH NO OTHER MODS.

4. Adding aditional mods.

MAKE SURE TO READ THE DESCRIPTION AND/OR READ ME OF MODS YOU WANT TO USE

What is the difference between what's refered to as file based mods and .dll mods?

File based mods are mods that would have to replace game file to function,
which we get around by using Mod Engine 2 to launch the game.
This means that if you are using 2 mods that are file based
they may replace eachothers files which can and most likely will cause issues.

.dll mods are mods that need to be injected into the game to function and would not replace game files.

How do I know if it's a file based mod or a .dll mod?

File based mods are usually overhauls like
Clever’s moveset packs, Convergence and Elden Ring Reforged
or something like a armor replacer but can also be simple edits to the regulation.bin.
Big overhauls will sometimes come bundled with .dll mods and Mod Engine 2.

.dll mods will generally speaking only have a .dll file, a config file aka a .ini file.
The .ini file may be in a folder sometimes. They can also come with it’s own .exe file like Seamless Coop.

You can preview what files a mod has on NexusMods before downloading
by going to the mods file page and click on Preview file contents.

My mod is a file based mod.

We’ll be using Clever’s moveset modpack to demonstrate since it comes with no additional .dll mods or Mod Engine 2

Open the zip file you have downloaded with prefered file archiver,
by selecting open archive or double clicking.
Open your file exploerer and go to the ME2 folder in your Game folder.
Open the mod folder. Which should at this point be empty.
Drag and drop the files from the mod into the mod folder.
The mod is now installed.

NOTE: You can only have one regulation.bin mod at a time.
Aka mods that come with a regulation.bin file.

NOTE2: Only you will see the texture and modle modifications you are using.
If you are using parts mods like armor and weapon mods
and you want it to be shown on the other players in your session when they wear this equipment.
Make sure that the parts files in your parts folder
come with a regular version and a _l version. (l is a lowercase L)

If they do not then make a copy and rename it.

Example: wp_a_0120.partsbnd.dcx’s copy would be renamed into wp_a_0120_l.partsbnd.dcx

My mod is a .dll mod.

You can use Mod Engine 2 or Elden Ring Mod Loader for .ddl mods.

Some .dll mods needs to be last in Mod Engine 2 for them to work.
Some will only work with Elden Ring Mod Loader.

If the .dll mod you are using is giving a Error saying “Could not find signature!”
try loading it last in Mod Engine 2 or try using Elden Ring Mod Loader and making a load order in .
It could also mean that the mod is outdated

Using `Mod Engine 2`

Download what ever .dll mod you want to use. I.ll be using the Posture bar mod as an example.
Open the downloaded zip and navigate to where you see it’s .dll file.
Go to your ME2 folder in your Game folder.
Make a new folder and name it into dllMods.
(You can name the folder to whatever you want,
if you do replace ddMods with what ever you named the folder into)
Drag and drop the .dll mods content into the dllMods folder.
Go back into your ME2 folder and open the config_eldenring.toml
Add the .dll mods .dll file into the config where you added Seamless Coop in a previous step.
Separate the .dll mods you are using with a ,.

  # Global mod engine configuration
  [modengine]
  # If set to true the debug console will appear while the game is running
  debug = false
  
  # List of files that will be loaded into the game as DLL mods.
  # Absolute paths to mods are supported but must use '\\' to separate path items. For example, if your mod is at E:\coolstuff\coolmod.dll, you must enter
  # the path in the config as "E:\\coolstuff\\coolmod.dll".
  # If there's no drive specifier (C:, D:, etc), the path is relative to where the launcher is located. For example, having the path as "mod.dll" will tell
  # Mod Engine 2 to look for the directory mod inside the Mod Engine 2 directory with the launcher.
  #
  # Multiple mods must be separated with commas. For example if you have 3 mods, you will have something like the following:
  # external_dlls = [ "coolmod.dll", "D:\\nicemods\\nicemod.dll", "sosofolder\sosomod.dll" ]
  external_dlls = ["SeamlessCoop/ersc.dll", "dllMods/PostureBarMod.dll"]
  
  # Mod loader configuration
  [extension.mod_loader]
  enabled = true
  
  # Not currently supported for Elden Ring
  loose_params = false
  
  # List of directories that contain modded files in order of prioritization. Inside each specified mod directory must have the game
  # assets in Fromsoft's asset structure. I.e. if you mod parts/something.partsbnd.dcx, the modded version must be at mod/parts/something.partsbnd.dcx.
  # Absolute paths to mods are supported but must use '\\' to separate path items. For example, if your mod is at E:\coolstuff\coolmod, you must enter
  # the path in the config as "E:\\coolstuff\\coolmod".
  # If there's no drive specifier (C:, D:, etc), the path is relative to where the launcher is located. For example, having the path as "mod" will tell
  # Mod Engine 2 to look for the directory mod inside the Mod Engine 2 directory with the launcher.
  #
  # Multiple mods must be separated with commas. For example if you have 3 mods, you will have something like the following:
  # mods = [
  #    { enabled = true, name = "coolmod", path = "mod1" },
  #    { enabled = true, name = "nicemod", path = "mod2" },
  #    { enabled = true, name = "sosomod", path = "mod3" }
  # ]
  # Note that modengine 2 currently has no way to resolve conflicting files including regulation.bin, and thus the mod with the highest priority
  # will have the modded file be loaded in the case of conflict. Some support for merging of params and potentially other assets is considered for
  # a future release.
  mods = [
      { enabled = true, name = "default", path = "mod" }
  ]
  
  # When enabled, scylla hide will be injected into the game. This allows for antidebug measures in the game to be bypassed so that you can attach
  # debuggers such as Cheat Engine, x64dbg, windbg, etc to the game without as much trouble. If you're not reverse engineering the game, this option
  # is probably not for you.
  [extension.scylla_hide]
  enabled = false

do the same for all .dll mods you want to use.
Save the changes when you are done.

Using Mod Loader

Some .dll mods may require Elden Ring Mod Loader to load properly.

THIS WILL MAKE YOU UNABLE TO LAUNCH VANILLA ELDEN RING IN OFFLINE MODE.\ UNLESS YOU RENAME dinput8.dll INTO _dinput8.dll.

Download Elden Ring Mod Loader
Open the zip file you downloaded and drag and drop it’s content into the Game folder.
Download whatever .dll mod you want to use. I.ll be using the Posture bar mod as an example.
Open the zip and navigate to where you can see the .dll file.\
Then drag and drop it’s content into the mods folder located in your Game folder.
Go back into your Game folder
Open Elden Ring Mod Loader’s mod_loader_config.ini file.
Add the mods you have installed to your load order. Lowest number has highest load priority.
Increase the load delay if some .dll mods fail to load properly.
```
 [modloader]
 load_delay = 5000
 show_terminal = 0

 [loadorder]
 PostureBarMod.dll.dll = 1
```
Save the changes when you are done.

I want to use a randomizer

Download Elden Ring Item Randomizer
Open the zip file you downloaded with your prefered file archiver.
Drag and drop the randomizer folder into your ME2 folder located in your Game folder.
Open the randomizer folder and run the EldenRingRandomizer.exe.
In the Randomizer window click on Select game exe
Navigate to your Game folder, select the eldenring.exe and press Open.
Change the settings to your likeing in the Item Randomizer, Enemy Randomizer and Misc Options tabs.
If you want to use the Randomizer with other file based mods you can click on Merge other mod.

NOTE: Trying to use Randomizers merge option with mods that make map edits can cause the randmizer to fail to randomize and spit out an error.
In the pop up select the option that suites your needs but easiest is to just click Select mod directory to merge.
Navigate to the ME2 folder and click on the mod folder and then click on Select Folder.
When you feel happy with your options click Randomize items and enemies and wait for the randomizer to finish.
If you uncheck a tab the Randomize button will reflect this.
Uppon a succesful Randomization the Randomizer will say Done in green at the bottom.
Close the Randomizer window and go back into your ME2 folder and open the config_eldenring.toml.
At the botton find the line { enabled = true, name = "default", path = "mod" }
Add a , to the end of this line like so { enabled = true, name = "default", path = "mod" },
Move the line down once, copy the line and paste it in the line above.
and change where it says "mod" into "randomizer"

It should look like this.

```
# Note that modengine 2 currently has no way to resolve conflicting files including regulation.bin, and thus the mod with the highest priority
# will have the modded file be loaded in the case of conflict. Some support for merging of params and potentially other assets is considered for
# a future release.
mods = [
   { enabled = true, name = "default", path = "randomizer" },
   { enabled = true, name = "default", path = "mod" },
   
]

# When enabled, scylla hide will be injected into the game. This allows for antidebug measures in the game to be bypassed so that you can attach
# debuggers such as Cheat Engine, x64dbg, windbg, etc to the game without as much trouble. If you're not reverse engineering the game, this option
# is probably not for you.
[extension.scylla_hide]
enabled = false
```

Save the changes

NOTE: If you do not want to use the randomizer anymore or just disable it for the moment.
You can add a # to the beginig of the line and Mod Engine 2 will skip launching it.

5. Launching the game

5.1 Open your ME2 folder located in your Game folder.

5.2 Launch the game with the launchmod_eldenring.bat