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Sims 4 Multiplayer Mod

by sims4multiplayer Posted 29th Jun 2019 at 6:31 PM - Updated 26th Jul 2021 at 6:53 PM by sims4multiplayer
167 Comments / replies (Who?) - 21 Feedback Posts, 3 Thanks Posts
This is a featured upload! It showcases the best talent and creativity available on MTS and in the community.


See the mod in action


Join the S4MP community
Installation guide

Note: With the public version you can play only over LAN and the launcher requires no login!
Having trouble with the setup? Join our Discord server for help!


Supported versions:
  • Versions 0.6.1 and later only work with The Sims 4 v1.68.154.1020 or later patches
  • Versions 0.2.1 and later only work with The Sims 4 v1.54.120.1020 or later patches
  • Version 0.2.0 only works with The Sims 4 versions BEFORE v1.54.120.1020 (08/2019) patch

With The Sims 4 Multiplayer Mod, you can play The Sims 4 real-time over the network and “live together” with other players in the same household. See what the others are doing, interact with them, and have fun together!

What does this mod do?
  • This mod allows multiple players to play together with the same save file at the same time over the local network. It's a full script mod packaged with a server application that should be run on one of the PCs participating in the game.

Conflicts
  • There are currently no known conflicts with other mods. (It might conflict with other full script mods though.) Important thing is to have all players the same set of mods/EPs.

How to install

It is necessary to already have a save file with all the Sims created, the house should be built, and all the necessary items should be bought beforehand since currently only Live mode is supported, build & buy mode are in experimental phase. (features might work but there is no guarantee) It is also important to have a save with time paused.

One of the PCs will act as a server and should do the following additional steps:
1. Start the launcher
2. Host a game by selecting an already created save file
3. Start The Sims 4, load the save file and enter your household
4. You should see a notification verifying your game has successfully connected to the server.

The other PC will act as remote client and should do the following additional steps:
1. Start the launcher
2. Join a game by entering the IP address of the host player (displayed in the launcher on the host machine)
3. Start The Sims 4, load the save file and enter your household
4. You should see a notification verifying your game has successfully connected to the server.

At this point you are all set up, feel free to start the time and enjoy the multiplayer The Sims 4 experience! (please note that only the server’s player can control the time)

Is this mod based on other mods? Is it safe to play with the mod?
  • While there are broken multiplayer mods out there, this one is written from scratch and it yields no security vulnerabilities. (If you don't trust it, you can still disconnect your PCs from the internet while you play on LAN.) There are some people out there who claim this mod is based on existing code or has security issues, we've asked them many times to do a developer talk about it, never received any real arguments.







Changelog
  • Changes in 0.11.1
- Fixed the inventory item dragging issues
- Fixed the dialogs appearing on the wrong client
- Added a save resync button to the launcher
- Added expansion pack auto-detection to the launcher
  • Changes in 0.10.1
- Fixed time desync bug occurred after travel
- Fixed the bug when a dialog (phone, cook, etc.) appeared on the wrong client
- Inventories now should work properly (items dragging may still have issues)
- Time is paused after traveling until all clients have loaded the new area
- Discord Rich Presence support
- Dream Home Decorator pack support
  • Changes in 0.9.1
- Freely enable/disable expansion packs in the launcher settings
- Stability fixes to avoid dark screen after traveling
- Fixed the unresponsive cursor happening on remote clients after traveling
- Launcher/mod version is now displayed in the launcher
- Read the latest mod related news right in the launcher
  • Changes in 0.8.1
- Fixed the lagging issue between Windows and Mac clients
- Buy mode bugfixes (all clients can sell/remove objects now
- All players can control the time
- The game will automatically disconnect when exiting the game (no more freezes, no need for 'disconnect' command anymore)
- The launcher will enable third party content & script mods automatically for the game
  • Changes in 0.7.1
- Initial buy mode support (buy & move objects)
- Basement object interaction fix
- Fixed launcher error popup when disconnecting from the game
  • Changes in 0.6.1
- Fixed the issue of client players not able to interact with anything in patch 1.68
  • Changes in 0.6.0
- 12 player support
- more travel fixes (infinite load, neighbor lots, etc.)
- fixed start game button in Mac launcher
  • Changes in 0.5.4
- travel fixes (infinite load, neighbor lots, etc.)
- game is automatically paused until both players have finished loading
- automatic save sync
- chat with the other player using 'chat <your message>' in the game console (CTRL + SHIFT + C)
- no need for 'mp.c' command, the game automatically connects (use 'disconnect' command when leaving the game)
- mod file (ts4script) is now installed automatically
  • Changes in 0.3.2
- travel support
- server application for MacOSX
  • Changes in 0.2.1
- support for breaking changes introduced in v1.54.120.1020 patch (released 08/08/2019)
  • Changes in 0.2.0
- added a tool which configures Windows Firewall properly for the server application
- documentation improvements

You must have the expansion, game version or stuff packs listed below installed to use this custom content. Please see the post text for any exceptions.

Sims 4
Built with Game Version: v1.68
Key: - File was updated after upload was posted
Filename - Tip: You can click the magnifying glass to see the archive contents Size Downloads Date
S4MP Online Launcher-0.11.1-public-mac.zip

Size: 79.72 MB · Downloads: 10,356 · 26th Jul 2021
79.72 MB 10,356 26th Jul 2021
S4MP Online Launcher 0.11.1-public-win.zip

Size: 47.84 MB · Downloads: 27,148 · 26th Jul 2021
47.84 MB 27,148 26th Jul 2021
S4MP Online Launcher-0.8.1-public-mac.zip

Size: 80.34 MB · Downloads: 11,284 · 22nd Feb 2021
80.34 MB 11,284 22nd Feb 2021
S4MP Online Launcher 0.8.1-public-win.zip

Size: 47.34 MB · Downloads: 35,556 · 22nd Feb 2021
47.34 MB 35,556 22nd Feb 2021
S4MP Online Launcher-0.7.1-public-mac.zip

Size: 80.20 MB · Downloads: 11,115 · 15th Dec 2020
80.20 MB 11,115 15th Dec 2020
S4MP Online Launcher 0.7.1-public-win.zip

Size: 47.27 MB · Downloads: 25,413 · 15th Dec 2020
47.27 MB 25,413 15th Dec 2020
S4MP Online Launcher-0.6.1-public-mac.zip

Size: 69.29 MB · Downloads: 4,620 · 10th Nov 2020
69.29 MB 4,620 10th Nov 2020
S4MP Online Launcher 0.6.1-public-win.zip

Size: 43.90 MB · Downloads: 11,828 · 10th Nov 2020
43.90 MB 11,828 10th Nov 2020
S4MP Online Launcher-0.6.0-public-mac.zip

Size: 69.27 MB · Downloads: 3,316 · 13th Oct 2020
69.27 MB 3,316 13th Oct 2020
S4MP Online Launcher 0.6.0-public-win.zip

Size: 43.89 MB · Downloads: 8,090 · 13th Oct 2020
43.89 MB 8,090 13th Oct 2020
S4MP Online Launcher-0.5.4-public-mac.zip

Size: 69.29 MB · Downloads: 3,240 · 2nd Sep 2020
69.29 MB 3,240 2nd Sep 2020
S4MP Online Launcher 0.5.4-public-win.zip

Size: 43.88 MB · Downloads: 9,986 · 2nd Sep 2020
43.88 MB 9,986 2nd Sep 2020
S4MP_0.3.2-Win.zip

Size: 22.66 MB · Downloads: 82,825 · 1st Mar 2020
22.66 MB 82,825 1st Mar 2020
S4MP_0.3.2-MacOSX.zip

Size: 23.21 MB · Downloads: 12,700 · 1st Mar 2020
23.21 MB 12,700 1st Mar 2020
S4MP_0.2.1.zip

Size: 25.73 MB · Downloads: 40,202 · 9th Aug 2019
25.73 MB 40,202 9th Aug 2019
S4MP_0.2.0.zip

Size: 25.75 MB · Downloads: 26,845 · 2nd Jul 2019
25.75 MB 26,845 2nd Jul 2019
Don't forget to Thank the creator after downloading! Use the Thanks button located above the screenshots above.
Basic Download and Install Instructions:
1. Download: Click the File tab to see the download link. Click the link to save the .rar or .zip file(s) to your computer.
Read the upload description for installation instructions. If nothing else is specified, do the following:
2. Extract: Use WinRAR (Windows) to extract the .package file(s) (if included, ts4script as well) from the .rar or .zip file(s).
3. Cut and paste the .package file(s) (if included, ts4script as well) into your Mods folder
  • Windows XP: Documents and Settings\(Current User Account)\My Documents\Electronic Arts\The Sims 4\Mods\
  • Windows Vista/7/8/8.1: Users\(Current User Account)\Documents\Electronic Arts\The Sims 4\Mods\

Need more information?
  • Anyone can use both .rar and .zip files easily! On Windows, use WinRAR.
  • If you don't have a Mods folder, just make one.
  • Mod still not working? Make sure you have script mods enabled
 
167 Comments / Replies (Who?) - 109 Feedback Posts, 47 Thanks Posts
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Page 3 of 7
Test Subject
Original Poster
#51 Old 14th Jul 2019 at 9:59 PM
Quote:
Originally Posted by jack11l
Can I go to other lots?


You can't travel together with the other player, but it's planned in the future development of the mod.
In the meantime you can use this workaround if you want to change lots from time to time: disconnect with one of the players, travel somewhere with the other one, sync the save (the method is detailed in the pdf) and connect again. You should provide every needs of your sims on the visited lot if you don't want to repeat this too often
Test Subject
#52 Old 15th Jul 2019 at 1:56 AM
Quote:
Originally Posted by sims4multiplayer
The mod works with mac, but the player who runs the server.exe must be on windows.

Ohhh too bad, my whole family only use MACs
Well then maybe a friend could give me his Windows...
Test Subject
#53 Old 15th Jul 2019 at 10:07 PM Last edited by turkthebot : 16th Jul 2019 at 7:51 AM.
Although it is an exe file it doesnt work at 32 bit system, it gives error that it is not compatible.
Test Subject
#54 Old 16th Jul 2019 at 1:45 PM
Does this mod work when using the same origin account on different computers? Or do you need to have two seperate ones?
Lab Assistant
#55 Old 16th Jul 2019 at 9:57 PM
Quote:
Originally Posted by ialeighj
Does this mod work when using the same origin account on different computers? Or do you need to have two seperate ones?


Yes, it works with the same account if either of the two players starts the game in offline mode.
Test Subject
#56 Old 17th Jul 2019 at 10:28 AM
Hello! Could you please tell me where I should put 'server.exe' file, which folder ?
I copied the 'S4MP_release.ts4script' to Mods, but 'server.exe' is somewhere else. I lauched it, but when I entered 'mp.c true' in console in the game, nothing happened... I wonder what's causing the problem.
Thanks for your help
Test Subject
Original Poster
#57 Old 17th Jul 2019 at 8:38 PM
Quote:
Originally Posted by paulinajla
Hello! Could you please tell me where I should put 'server.exe' file, which folder ?
I copied the 'S4MP_release.ts4script' to Mods, but 'server.exe' is somewhere else. I lauched it, but when I entered 'mp.c true' in console in the game, nothing happened... I wonder what's causing the problem.
Thanks for your help


Server.exe can go anywhere on your computer, but don't put it in your mods folder. You can even launch it directly from winrar.
The problem might be that script mods or mods generally are not enabled in your game. You can check it in the game options.
Test Subject
THANKS POST
#58 Old 18th Jul 2019 at 7:44 PM
This script is almost perfect... If you can somehow just allow all mods + expansion pack and remove the whole saved data issue.. You got yourself a perfect mod.
Test Subject
#59 Old 18th Jul 2019 at 11:02 PM
Quote:
Originally Posted by jimmyle1015
This script is almost perfect... If you can somehow just allow all mods + expansion pack and remove the whole saved data issue.. You got yourself a perfect mod.


So my roommate and I both play together, we use the same origin account and we have all the packs and such plus an insane amount mods and CC. and it runs smoothly well it hiccups but its her system the hiccups. So what we have figured out is yes you can have CC and script mods in the game and it runs, you can have babies with no issues, if you want to travel you have to have the main person do it then save on the lot and share the new save but it works, also you can go into build mode well the person running the server can go into build and edit and it mostly works fine every once in a while the non server player will not see the changes made correctly, you can go into edit cas mode using MCCC and use it with out issues just be aware that the main prompt are going to populate on the server players screens so they have to select the options, this also happens with another Mod we use all prompt run thru the server players system.

All in all its been really fun to play around with and we are looking forward to further updates for it
Test Subject
DELETED POST
19th Jul 2019 at 4:14 AM
This message has been deleted by NightRose. Reason: Delete
Test Subject
#60 Old 20th Jul 2019 at 2:23 AM
Will you make the mod works on MAC ?
Test Subject
#61 Old 20th Jul 2019 at 7:56 PM
I have a question... I have get famous and strangerville however my friend does not. the page says it needs get famous and strangerville is it still playable
Test Subject
#62 Old 21st Jul 2019 at 5:34 PM
Quote:
Originally Posted by iloveseals
I have a question... I have get famous and strangerville however my friend does not. the page says it needs get famous and strangerville is it still playable


"Quote:
Originally Posted by Caetzrin
Hey, I have a question. it says that you need strangerville. my friend does not have this pack, so the mod will not work properly? Btw great work!


If your friend has the latest patches for the game, not having the actual expansion pack should not be an issue!"
Test Subject
#63 Old 23rd Jul 2019 at 10:25 PM
Would this work if I'm on windows and someone else is on Mac?
Test Subject
#64 Old 27th Jul 2019 at 6:59 AM
could i use it if i and my friend have different DLCs? can we chose the DLCs we both have and don‘t upload the others?
Test Subject
#65 Old 28th Jul 2019 at 8:43 AM
Is a pack requirement really necessary? I don't have Strangerville and don't really see why I would need it for a mod that only makes the game playable with others.
Test Subject
Original Poster
#66 Old 28th Jul 2019 at 8:01 PM
Quote:
Originally Posted by Trash_45678
Is a pack requirement really necessary? I don't have Strangerville and don't really see why I would need it for a mod that only makes the game playable with others.


It's only the patch which is a requirement, not the pack itself.
Test Subject
THANKS POST
#67 Old 31st Jul 2019 at 6:16 PM
I'm on windows and my friend is on mac, we both have strangerville expansion packs and the island living, but his version of the game newer that mine, i did everything as the instruction says everything seems to work, on my pc in sims it shows that everything successfully connected after typing mp.c, on mac also shows connected to my server but when i try to play, it's still not the same game going, just as single player.. How can I solve this problem?
Test Subject
#68 Old 6th Aug 2019 at 8:43 PM
When it will be possible to move together to other locations without hovering game?
Test Subject
#69 Old 8th Aug 2019 at 12:11 AM
I got an error "Failure: 'sims4multiplayer/debug/debug_commands' (sims4multiplayer.debug.debug_commands) (ModuleNotFoundError: No module named 'pydevd')" not sure what happened? It was causing 'Script call failed' errors all around.
Test Subject
#70 Old 8th Aug 2019 at 7:27 PM
Thanks for your work !

Need an update to play with version 1.54.120.1020 !
Actually, when i play with my girlfirend, because of the new version of the game, it's impossible for her to do anything in multiplayer mode.

Thanks a lot, waiting for the new version !
Test Subject
Original Poster
#71 Old 9th Aug 2019 at 3:04 PM
Quote:
Originally Posted by Azpartam
Thanks for your work !

Need an update to play with version 1.54.120.1020 !
Actually, when i play with my girlfirend, because of the new version of the game, it's impossible for her to do anything in multiplayer mode.

Thanks a lot, waiting for the new version !


A new version (0.2.1) addressing these issues has just been released!
Lab Assistant
THANKS POST
#72 Old 12th Aug 2019 at 6:59 PM
So I was reading the comments and I wanna make sure I got this right say my friend and I are gonna try out this mod. He doesn't have the sims so I let him use my origin account even though I will be using the account as well, can we still play together even though we will be using the same origin account? Thanks!
Test Subject
Original Poster
#73 Old 12th Aug 2019 at 9:47 PM
Quote:
Originally Posted by SimsPixelPalace
So I was reading the comments and I wanna make sure I got this right say my friend and I are gonna try out this mod. He doesn't have the sims so I let him use my origin account even though I will be using the account as well, can we still play together even though we will be using the same origin account? Thanks!


Sure, but one of you should be in offline mode on Origin
Lab Assistant
#74 Old 14th Aug 2019 at 4:37 PM
Quote:
Originally Posted by sims4multiplayer
Sure, but one of you should be in offline mode on Origin


wow awesome! thanks!
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