GameModding; Phasmophobia
One of my most successful mods, the 8player phasmophobia mod. This was the easiest one ive done ever because of the mono scripting engine that can easily be reversed. The game later changed to obfuscated IL2CPP.
But i want to keep a copy on my blog as it was downloaded more then 30k+ times with other blog-sites copying my original steam guide ;)
The Steamguide:
Borw
More than 4 player coop (game modification) [PATCHED]
By seppdroid and 1 collaborators
I ran in to a small problem. I have more than 3 friends that play phasmophobia. So when i modified the game i was able to play with all my mates. Let me show you how to install it: (this mod allowes for a max of 8 players to join)
for contact and or if you are the developer (and want me to delete this post) please send me an email to the address below
Let me know if you have any issues in the comments.
Intro:
Yes you might have googled on how to play phasmophobia with more than 4 players. Well i didnt do so... So i started to go to work and change the game a bit.
After i made the modification i started to google who had already made such a modification, (this was because i noticed a couple lobbies with more than 4 players). After finding someone else's project on github i was able to see what they made their mod do. I personally wasn't really a fan of it. Their mod changed the core of the game (by being able to add more ghost's, change your name & colour, hunting delays etc.) This is quite funny ofcourse, but that defeats the spooky purpose of this game.
My mod is basically vanilla + 8 players and no cheats ;) With more then 8 players the game becomes unstable and no fun anymore. i wouldnt even recconmend more then 6 tbh.
it was quite easy to mod, like any other unity game. Thank you developer for using photon! like i do in my games. (if i ever finish one that is lol)
Let's start
Let's go and start hunting ghost with all of your mates. Phasmophobia is still in development and will receive more updates. So lets first check if you have the same version as the modified file.
For this start phasmophobia. in the main menu you should see a server version on the bottem-left
this version should be 0.174 like shown in the picture:
if all is good then you may go to through with the installation process. just make sure you dont install the mod if your version differates from the one in the picture (0.174). Ill update the guide when the game updates.
People have reported that mods for phasmaphobia could corrupt/damage your save-file. My mod doesn't touch the save-file handler. Use it with caution and at your own risk
Please also note that the loading time increases when starting the game with more then 4 players. Please be patient, even though your game looks like it's not responding.Installation & download linkInstalling the mod is really simple. so lets go!
Right click Phasmophobia in your steam library and go to properties
Go to "local files" and click on "browse local files"
note: if you messed up your game install then just click "verify the integrity of the game".
An explorer window with the local game files will now open.Now navigate to the "Phasmophobia_Data" folder
Now navigate to the "managed" folder
Here you can replace the "Assembly-CSharp.dll" with the modded file you've downloaded from the link
!! Be sure to backup your original "Assembly-CSharp.dll" file by copying it to another location or changing the name extension like i did!!
note: i also added the one that comes with the game, just so you have an second backup.
Download
download link:
https://community.diodematrix.com/viewtopic.php?f=13&t=219
Archive: https://web.archive.org/web/20210620044650/https://community.diodematrix.com/viewtopic.php?f=13&t=219&sid=abbbd53fe49b669c6bc8f30a3d672ead
dont worries, the download button looks like a scam lol. I'll get that changed soon
You will have to extract "phasmomod.rar" with winrar/7zip or any other archiving software.
then extract the contents to the folder i mentioned above ("..\Phasmophobia_Data\Managed")
Starting a lobby and checking if it works
You can find a sign on the main menu showing you that the mod works. This is a simple text next to the server version. This also works as a reminder you still have the mod installed.
Please don't try to join 4 player lobbys that arent modded and full. It wont work..
It might show like there is place for 8 players, but the server will decide that you are not allowed to join.
When starting a lobby make sure to select a map first then invite your friends with the code. (or when the lobby is open to the public make sure you change the map before you have more than 4 players). this is just to prevent your game from crashing, this was the only bug i could find that would crash the game
What also could happen is that the lobby screen glitches (visually), so again first set everything up (items,map) and then invite your friends.
Kicking players is laggy. the board only has place for 4 entitys so kicking player 5 is close to impossible...
the ready and start buttons are a bit bugged. They should still work
Outro
Ok so we had allot of fun playing phasmophobia. But if you have any questions and or complaints send me a mail at
hello@seppdroid.com
if you are the developer and very mad that i made this mod then send me a mail at:
imveryangry@seppdroid.com
(filtered whitelisted-wildcard so you can decide what my email address is today ;))
Issues
Ok so the core of the game is not designed for more then 4 playes. some things work better then others.
a funny glitch is that you can make a picture of one of your friends (that is not fully registered to the game) and it will become evidence as a dead body.
I tried to change the lobby to add more items, but after that try the item spawner pooped it's pants. I dont want to change everything to make that work correctly. It's not my game and i already think it's not very nice of me for releasing this mod.
i didnt put allot of work in this mod, there are allot more talented modders then me so keep your eyes out for other options :)
I hope we will soon see more updates of this great game! And (maybe) even upping the players size for asylum. Since that map is great to play with 6 gamers ;).
My friend contacted the developer via discord and this was his response:
My friend didnt ask anything about sharing it. I will contact him too. Probably going to be a bit hard since his inbox is pretty full i guess...
Updates
Discord Update
A new post appeared on the discord server of Phasmophobia:
Immusama - Today at 6:18 PM
@everyone
Info - #rules - 6. Hacking & Piracy:
We are aware that there has been a number of games that have been using third party tools (cheats) to modify the game.
This includes changes such as increasing player limits, changing AI behaviour and simply increasing money or level.
We cannot support this as it is causing a number of issues across the game, including the corruption of saved games and destabilizing the servers for other players.
We strongly advise you to not join any of these games as they can harm your save or game files, as well as disrupt the game for others.
The easiest way to determine if a lobby is a "modded" is, if it has more than 4 players. Other signs can also be unusual AI behaviour, teleporting, or even multiple ghosts.
Some of these users have been claiming to be developers with access to tools. No member of staff will be using such tools in the public branch of the game and all testing is done on private beta and developer branches.
Anyone using such cheats are not developers or members of staff.
We are currently looking into ways to combat this but until then please avoid joining such games so your files are not corrupted and the servers can function normally!
Thank you
*credits to @Ashley and @Rai
Im just sharing the information, to give you an indication. Please note that savegame corruptions mainly happens when save-game information is being edited. My mod only changes the way the server and (clients) work.
Im still waiting for a reply from the developer, as it is not my intention to ruin anything. The only reason i made this mod was that my 5 friends can play this game with me on the bigger maps.
And i wanted to share it with others who walk against this limitation...
DIY
Here is a repo with the binaries and the changes i have made:
so you can do it yourself ;)
github link [github.com]
My last comment
I can't get the mod to work on the beta version (IL2CPP). Soon the game will update to IL2CPP, that's the day this mod won't work anymore. it crashes the game and or doesnt let more then 5 players join. Im going to keep an eye out for if someone else manages to make it work. But for now im not going to put any more time/work in it. When i find anything working and usefull Ill share the link here.
the changes i made are available here: https://github.com/SEPPDROID/phasmophobia-8player-mod-mono (MONO)
so you can see what a low effort mod this actually was. Never knew it would take off like that. 20k registered downloads is quite much.
And the archived project for the IL2CPP mod that i abandoned (i removed all the harmony patching & handling code because it didnt work, same goes for the 8 playermod itself. No point in uploading something that doesn't work...)
https://github.com/SEPPDROID/PhasmodHandler
It only contains the discord rich presence code lol.
Patches
//
//
// all the changes in one list. This isnt a compilable csharp file. Im just using this for the syntax highlighting.
// As you can see it was a low effort ctrl+f mod changing all the max player variables i could find
// Modifying games is allot of fun but NEVER EVER steal someones work. NEVER. It's fun to learn how the Unity scripting engine works
// Let me know if i forgot one, it was some time ago... Never knew my low effort mod would reach that many players.
//
//
// change to
// ---
// Constants.cs
// line 10
public const int serverMaxPlayers = 8;
// ---
// LobbyManager.cs
// line 181
if (!info.IsOpen || info.PlayerCount == 8 || !info.IsVisible)
// line 221
MaxPlayers = 8,
// ---
// ServerListItem.cs / is optional, only changes the /4 max players to /8 on the lobby Canvas screen (UI).
// line 25
this.serverPopulation.text = population + "/8";
//---
// MainManager.cs
// line 224
MaxPlayers = 8,
// line 239
MaxPlayers = 8,
// line 275
MaxPlayers = 8,
// ---
// MultiplayerController.cs
// line 40
MaxPlayers = 8
// ---
//
// This last patch is something im not really sure of... It should be handled better but it works. I havent found any issues with this one... (yet) If you can find a better way then that's more prefferable.
//
// The issue is that players 5 - 8 dont get their ready statement checked, thus preventing the game to load.
// Note that empty slots always have a ready status
//
// ServerManager.cs
// line 453
this.startGameButton.interactable = true;
// i cant remember if i forgot one. if thats the case let me know.Screenshots
update 2025, still people commenting haha.
2025 Bonus
I just noticed that people even went back to old builds just to play with their friends:
Razzle
makes me sad i didn't give the il2cpp obfuscation cracking a go...
copy:
Downloading the Mod,
If you've made it this far, so congrats. But now's not the time for celebration. We still haven't installed the mod yet. So let's head over to the Github page[github.com] where seppdroid hosts the mod and download it. You can follow the process that you used in the first step to download the mod.
Verifying the Mod is Correctly Installed,
You're here. You're at the last step. Go ahead and launch the game via Steam. If when you get to the main menu, you see "Server Version: 0.174 - 8 player mod by seppdroid", you've done everything correctly and can now enjoy hosting lobbies with 8 people (everyone else needs to follow this guide otherwise, you will not be able to connect to each other). Public lobbies are fully functional as well as private ones.