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Sims 4 Multiplayer Mod

by sims4multiplayer Posted 29th Jun 2019 at 6:31 PM - Updated 18th Jun 2021 at 11:36 PM by sims4multiplayer
158 Comments / replies (Who?) - 17 Feedback Posts, 7 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 0.10.1
- 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-0.10.1-public-mac.zip

Size: 81.01 MB · Downloads: 3,480 · 11th Jun 2021
81.01 MB 3,480 11th Jun 2021
S4MP Online Launcher 0.10.1-public-win.zip

Size: 47.82 MB · Downloads: 9,011 · 11th Jun 2021
47.82 MB 9,011 11th Jun 2021
S4MP Online Launcher-0.8.1-public-mac.zip

Size: 80.34 MB · Downloads: 10,957 · 22nd Feb 2021
80.34 MB 10,957 22nd Feb 2021
S4MP Online Launcher 0.8.1-public-win.zip

Size: 47.34 MB · Downloads: 33,381 · 22nd Feb 2021
47.34 MB 33,381 22nd Feb 2021
S4MP Online Launcher-0.7.1-public-mac.zip

Size: 80.20 MB · Downloads: 10,920 · 15th Dec 2020
80.20 MB 10,920 15th Dec 2020
S4MP Online Launcher 0.7.1-public-win.zip

Size: 47.27 MB · Downloads: 25,130 · 15th Dec 2020
47.27 MB 25,130 15th Dec 2020
S4MP Online Launcher-0.6.1-public-mac.zip

Size: 69.29 MB · Downloads: 4,444 · 10th Nov 2020
69.29 MB 4,444 10th Nov 2020
S4MP Online Launcher 0.6.1-public-win.zip

Size: 43.90 MB · Downloads: 11,483 · 10th Nov 2020
43.90 MB 11,483 10th Nov 2020
S4MP Online Launcher-0.6.0-public-mac.zip

Size: 69.27 MB · Downloads: 3,180 · 13th Oct 2020
69.27 MB 3,180 13th Oct 2020
S4MP Online Launcher 0.6.0-public-win.zip

Size: 43.89 MB · Downloads: 7,844 · 13th Oct 2020
43.89 MB 7,844 13th Oct 2020
S4MP Online Launcher-0.5.4-public-mac.zip

Size: 69.29 MB · Downloads: 3,088 · 2nd Sep 2020
69.29 MB 3,088 2nd Sep 2020
S4MP Online Launcher 0.5.4-public-win.zip

Size: 43.88 MB · Downloads: 9,478 · 2nd Sep 2020
43.88 MB 9,478 2nd Sep 2020
S4MP_0.3.2-Win.zip

Size: 22.66 MB · Downloads: 80,667 · 1st Mar 2020
22.66 MB 80,667 1st Mar 2020
S4MP_0.3.2-MacOSX.zip

Size: 23.21 MB · Downloads: 12,464 · 1st Mar 2020
23.21 MB 12,464 1st Mar 2020
S4MP_0.2.1.zip

Size: 25.73 MB · Downloads: 39,462 · 9th Aug 2019
25.73 MB 39,462 9th Aug 2019
S4MP_0.2.0.zip

Size: 25.75 MB · Downloads: 26,375 · 2nd Jul 2019
25.75 MB 26,375 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
 
158 Comments / Replies (Who?) - 104 Feedback Posts, 44 Thanks Posts
Hide Thanks Posts for this thread (Show only feedback)
Page 5 of 7
Test Subject
THANKS POST
#101 Old 28th May 2020 at 11:38 AM
Wow thats really cool! Im wondering, does this require two separate origin accounts since its "online" or can you play together if youre using the same origin account as long as its installed on both PC's? Id like to let my boyfriend play with me but buying all the packs for him as well just seems uneccessary :P
Test Subject
THANKS POST
#102 Old 11th Jul 2020 at 6:52 PM
I hope it gets secure so that way hackers can't lurk onto your internet and steal credit card information, medical records, and steal your identity.
Test Subject
#103 Old 13th Jul 2020 at 2:20 AM
Unfortunately it doesn't work with game version 1.64.84.1020. My friend and I followed all the directions and got the notifications that we were both connected to the server. But our sims were doing different things and we couldn't see what the other was doing.
Test Subject
Original Poster
#104 Old 1st Sep 2020 at 7:27 PM
Quote:
Originally Posted by Jazzkitty
I hope it gets secure so that way hackers can't lurk onto your internet and steal credit card information, medical records, and steal your identity.


Great news that it's already THAT secure
Test Subject
Original Poster
#105 Old 1st Sep 2020 at 7:27 PM
Quote:
Originally Posted by SusannePlays
Wow thats really cool! Im wondering, does this require two separate origin accounts since its "online" or can you play together if youre using the same origin account as long as its installed on both PC's? Id like to let my boyfriend play with me but buying all the packs for him as well just seems uneccessary :P


You can use the same Origin account!
Test Subject
Original Poster
#106 Old 1st Sep 2020 at 7:27 PM
Quote:
Originally Posted by rockopeaches
Unfortunately it doesn't work with game version 1.64.84.1020. My friend and I followed all the directions and got the notifications that we were both connected to the server. But our sims were doing different things and we couldn't see what the other was doing.


It should work with that game version as well, you might want to join our Discord to investigate?
Test Subject
#107 Old 7th Sep 2020 at 6:09 AM
This Multiplayer mod is just like the old ones
Disabling build mode with 2nd player
Disabling placing items by 2nd player
Disabling other features just to make money?
Like you are just doing what the old mods did and what they wanted.
If you want more fans you need to stop disabling stuff to make money
Test Subject
Original Poster
#108 Old 10th Sep 2020 at 9:54 AM
Quote:
Originally Posted by ryanscool2005
This Multiplayer mod is just like the old ones
Disabling build mode with 2nd player
Disabling placing items by 2nd player
Disabling other features just to make money?
Like you are just doing what the old mods did and what they wanted.
If you want more fans you need to stop disabling stuff to make money


Unfortunately, these features are not disabled but still in development. As far as I know, these features have never worked in older similar mods neither. (Pretty sure build mode was never fully working.)
Test Subject
THANKS POST
#109 Old 12th Sep 2020 at 1:44 PM
Looks really cool

Any plans to connect simcity with the sims?
Test Subject
THANKS POST
#110 Old 17th Oct 2020 at 11:54 PM
thnx. I will try this...
Test Subject
#111 Old 26th Oct 2020 at 4:38 AM
I like the idea of the mod, but it's not worth $9/month with things disabled to get more money.
Test Subject
THANKS POST
#112 Old 10th Nov 2020 at 8:39 AM
i was wondering if this mod will work on crack version? sorry i have the crack one im just trying out the sims for building house for my school project
Test Subject
Original Poster
#113 Old 10th Nov 2020 at 11:54 PM
Quote:
Originally Posted by nethflicks
i was wondering if this mod will work on crack version? sorry i have the crack one im just trying out the sims for building house for my school project


People tend to say it does!
Test Subject
Original Poster
#114 Old 10th Nov 2020 at 11:54 PM
Quote:
Originally Posted by DigitalNikki
I like the idea of the mod, but it's not worth $9/month with things disabled to get more money.


Please read back, it's not about disabling features, it's about rolling out new features.
Test Subject
#115 Old 21st Nov 2020 at 3:09 PM
Hey, there´s a bug that if we play with 3 PCs only the host can interact with anything in the simworld
Test Subject
THANKS POST
#116 Old 25th Nov 2020 at 1:01 AM
where do i download it i am having a hard time finding it
Test Subject
#117 Old 29th Dec 2020 at 6:09 AM
Just downloaded the latest Mac launcher and got the following error:
" “S4MP Online Launcher” can’t be opened because Apple cannot check it for malicious software. This software needs to be updated. Contact the developer for more information."
Screenshots
Test Subject
Original Poster
#118 Old 7th Jan 2021 at 12:37 PM
Quote:
Originally Posted by SimBomb89
Hey, there´s a bug that if we play with 3 PCs only the host can interact with anything in the simworld


Make sure you are not using an outdated version of the game
Test Subject
Original Poster
#119 Old 7th Jan 2021 at 12:37 PM
Quote:
Originally Posted by titanic_ash
Just downloaded the latest Mac launcher and got the following error:
" “S4MP Online Launcher” can’t be opened because Apple cannot check it for malicious software. This software needs to be updated. Contact the developer for more information."


Use right click -> open, then you can bypass this dialog.
Test Subject
#120 Old 14th Jan 2021 at 7:51 PM
Hi i am new with this site and i just found this multiplayer mod. My question is that if i would like to play with my gf and we would like to play on lan. What are the necesseary steps? We both downloaded the S4MP Online Launcher 0.7.1-public-win.zip. We have connected the folder/game exe in this launcher. We have the multiple person save. The host created a game and with the IP address the second pc is connected. The host pressed the Everyone's Connected button. When the Host starts the game and logs in to the character the Launcher shows still that the player is Not Connected. After that the second player also press the Start Game button logs in to the character. There are no notifications that anybody is logged anywhere neither in the launcher. Should we download anything more?
Test Subject
#121 Old 22nd Jan 2021 at 11:31 PM
So between the "updates" to this mod,
as well as leaks online... :

I suspect this is endorsed by Maxis, and is the lead on their research into proper dev of multiplayer for TS5.
Its been alleged that they're also heavily perplexed with proper implementation of Build mode during these online sessions and the updates speak to that.

You guys are sneaky. But I'm onto you.

All seems to line up, Im excited. Figure it out :D
Test Subject
#122 Old 26th Jan 2021 at 11:39 PM
Default S4MP mod launcher
Quote:
Originally Posted by raptorpony
Hi i am new with this site and i just found this multiplayer mod. My question is that if i would like to play with my gf and we would like to play on lan. What are the necesseary steps? We both downloaded the S4MP Online Launcher 0.7.1-public-win.zip. We have connected the folder/game exe in this launcher. We have the multiple person save. The host created a game and with the IP address the second pc is connected. The host pressed the Everyone's Connected button. When the Host starts the game and logs in to the character the Launcher shows still that the player is Not Connected. After that the second player also press the Start Game button logs in to the character. There are no notifications that anybody is logged anywhere neither in the launcher. Should we download anything more?


Hey raptorpony, I am real curious how you fond the folder/game exe... and or the sims/mods/games/bin/folder the launcher is asking for ts4_x64.exe file?? and how to get past that issue?
thank you shallbrown72
Test Subject
DELETED POST
30th Jan 2021 at 5:42 PM
This message has been deleted by katjakim.
Test Subject
#123 Old 30th Jan 2021 at 5:49 PM
Default Really Cool Mod
Hii, I tried to play with my friend and we were connected to the same server and I could control the sims, but when she tried it there weren't any files she could click on (she could click on the inventory button but not control the sims). Soo please help, id really love to use the mod.
Thank you!
Test Subject
THANKS POST
#124 Old 31st Jan 2021 at 2:07 AM
The mod works great! But theres a bug that me and my brother encounter, its a bug that when you receive an interaction message from your phone and click ok, then nothing happened. Can anyone help me? I've troubleshoot the mods i installed and reinstall the game, but the bug still there. Sorry for bad english
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