Sims 4 Multiplayer Mod

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Uploaded: 29th Jun 2019 at 6:31 PM
Updated: 5th Jun 2024 at 4:55 PM

See the mod in action

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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 0.25.1 and later only work with The Sims 4 v1.90 or later patches
  • Versions 0.23.1 and later only work with The Sims 4 v1.84 or later patches
  • 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.

  • 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.

  • Changes in 0.49.1
- Added launcher support for Riviera Retreat Kit and Cozy Bistro Kit
- Fixed the View Bill Information action at the mailbox
- Portable items (tablets, laptops etc.) bought by client players can be placed to the inventory
- Time is not paused anymore when entering EA/Steam overlay
  • Changes in 0.47.1
- Fixed infinite wait when buying a horse from a ranch
- Fixed buying/selling horse via phone from Ranch Animal Exchange
- Fixed the new Cook and Bake dialogs in Home Chef Hustle
- Fixed infinite baking time for pizza, batter, wafller etc.
- Updated the toolchain for the launcher for better support for Windows 11 and to fix potential security issues
- Fixed bug with ending events for client players (e.g.: discovery quest)
- Fixed interactions for discovery quests
- Added Urban Homage Kit and Party Essentials Kit to the launcher
  • Changes in 0.45.1
- Time is not stopped when the host player is entering build mode
- Time is not stopped when the host player gets a dialog
- Time is not stopped when the host opens travel map
- Time is not stopped when the host enters the game ESC menu
- Confirmation dialog when selling horse through stables is shown for the correct player
  • Changes in 0.44.1
- Enter build mode and make renovations task is updated properly when client players enter the build mode
- Photo selection at the end of the gig works for clients as well
- The reveal result event starts properly when it was started by a client player
- Added Crystal Creations Stuff to the launcher
  • Changes in 0.43.1
- Horse competitions can be started by all players
- Fixed interaction issues introduced by latest patch (interactions with orange icon)
- Fixed create & edit calendar event issues
- Fixed location selection when planning a new event
- Adjusted phone menu to comply with the latest changes
- Added Goth Galore and Castle Estate kits to the launcher
  • Changes in 0.42.1
- Dream Home Decorator gigs are now synced properly among players
- Cancel gig works for all player
- During gig, revealing clients' preferences work properly for all players
  • Changes in 0.41.1
- Fixed perk points menu for client players
- Fixed rewards store for client players
- Fixed travelling & stuck issue when opening map with the M key
- Travel to venue button works for all players
- Client players can assign retail uniforms to employees
- Retail summary dialog works for all players
- Added launcher support for For Rent expansion pack
  • Changes in 0.40.1
- Fixed the bug that prevented client players to end events & holidays
- Fixed bugs related to active jobs introduced in latest game updates
- Traveling can be cancelled for client players when entering the map with the M button
- Manage employees dialog works for owned restaurants for client players (hire/fire/promote/demote employees)
- Restaurant settings dialog works for client players
- Added Home Chef Hustle to the launcher