SOLVED: Has anyone out there gotten Seamless Co-Op mod to run on SteamDeck?

[Yard-Dog®]

I've got the vanilla game running amazingly on SteamDeck, but I'm trying to get the Seamless Co-Op mod to run to no avail. I've already gotten my save file in the right spot, and I've got the mod files in the right spot on the Deck, but when trying to launch Seamless Co-Op as an added non-Steam game, it acts like it's launching, but then the "Launching" button turns back to green and changes to "Play" after a few seconds with no error message.

Has anyone else experienced this, and have you found a solution? Also, as an added note, I've selected all listed versions of Proton under Steam's "compatibility" section, but I get the same result.

Any help from successful Seamless Co-Op modders on SteamDeck would be tremendous, and I'm happy to unload a ton of Steam points to you for a fix.

Thanks in advance.

[Yard-Dog®]

Got it working. For whatever reason, the mod files were all in the correct place, but the shortcut created by selecting ‘Send To Steam’ from the .exe file itself seemed to tell Steam to look in a temp folder instead of the actual location where the .exe was located. That option must not do what I thought it was going to do.

For whatever reason now though, when running Seamless Co-op on the Deck, there is no “continue” option in the mod’s version of the game's main menu; only “new game” is available. So now my save file can’t be located? WTF? It’s right next to my vanilla save file in the same folder, but it’s been re-extensioned to .co2 instead of vanilla’s .sl2 as required.

[nfinite.recursion]

This part's a little tricky.

Non-Steam games have their own little Proton prefix to store data that would normally be saved in a Windows user's personal directory, where the "My Documents", AppData, and a bunch of other personal directories are kept.

I started the Seamless Coop Mod, made a character real quick, skipped the intro stuff, and then exited when I saw my toon onscreen.

Then I opened the file manager and within my Home directory (should open to this by default), I searched for "ER00" (those are zeroes, btw). Caps matter in Linux (usually). Don't include the quotes. This should find your new coop mod save. You *should* be able to right-click the save file and choose to open its location. The reason I searched for the location rather than went straight to it was because Steam assigns random ids to non-Steam games, so I cant provide an exact location. For reference, my mod saves were at:

"/home/nr/.steam/debian-installation/steamapps/compatdata/3438780493/pfx/drive_c/users/steamuser/AppData/Roaming/EldenRing/76561197977097655/".

https://steamcommunity.com/sharedfiles/filedetails/?id=2862416545

As a side note, the ".co2" extension is normal. It's just one small change to keep the vanilla and mod versions of saves from getting mixed up and getting people banned.

https://steamcommunity.com/sharedfiles/filedetails/?id=2862414374

Decided to make the Seamless Coop Mod's page in Steam look more legit by adding the Elden Ring icon, one of the official screenshots from the mod's Nexus page, and change the title a bit. Not sure how this would look when shifting over to the Steamdeck UI.

[Komarimaru]

Messaggio originale di Yard-Dog®:

Got it working. For whatever reason, the mod files were all in the correct place, but the shortcut created by selecting ‘Send To Steam’ from the .exe file itself seemed to tell Steam to look in a temp folder instead of the actual location where the .exe was actually located.

For whatever reason now though, when running Seamless Co-op on the Deck now, there is no “continue” option in the mod’s main menu; only “new game” is available. So now my save file can’t be located? WTF? It’s right next to my vanilla save file in the same folder, but it’s been re-extensioned to .co2 instead of vanilla’s .sl2.

The mods tells you, that you get a separate save file for the mod, that way there's no connection to the default online servers.

Just make a new save with ya friends, should be able to quickly get to where you were before since already did it solo.

[Yard-Dog®]

Thanks for all your help.

The missing piece of the save-file-puzzle was indeed that which nfinite.recursion uncovered for me. I followed that advice to start a new game, paying attention of where the new save file ended up (in its own unquely ID'd folder one path just behind where my original .co2 save files were originally placed). Once I found that, I just overwrote the brand new save with my previously maintained save from my PC before I obtained the Steam Deck. Then, from there, "Continue" was now an option again. Yay!

So, all problems are now thankfully solved, and I'm a happy camper. Thank you again for the helpful efforts here. You all rock.

Now, on with the point-giving!

EDIT: Definitely ninja'd! Thanks again, all!

[John Titor]

Messaggio originale di Yard-Dog®:

Thanks for all your help.

The missing piece of the save-file-puzzle was indeed that which nfinite.recursion uncovered for me. I followed that advice to start a new game, paying attention of where the new save file ended up (in its own unquely ID'd folder one path just behind where my original .co2 save files were originally placed). Once I found that, I just overwrote the brand new save with my previously maintained save from my PC before I obtained the Steam Deck. Then, from there, "Continue" was now an option again. Yay!

So, all problems are now thankfully solved, and I'm a happy camper. Thank you again for the helpful efforts here. You all rock.

Now, on with the point-giving!

EDIT: Definitely ninja'd! Thanks again, all!

Excellent! Glad you got it working.

[Ashbringer]

If it's just seamless then you just add the mod in and replace start_protected_game.exe with the Seamless Coop mod executable and it should work if you want to add mods on top of that then you need both mod engine and modloader to be able to pull that off.

[Vidicil]

It doesn´t even run on 20 fps normal in my case. Is there anyone that got it running on 30fps? everywhere I find people that say, that they got it running on 30 maybe even 40