Sims 4 Multiplayer Mod (S4MP)

S4MP is a Sims 4 Multiplayer mod that allows you to play with up to 12 friends in real-time multiplayer!

 

S4MP featured on GamesRadar

 

See the mod in action!

 

Discord | YouTube | Reddit | Website

 

Installation Guide

1️⃣ The host must prepare a Sims 4 household with everyone's sims to play with, meanwhile, everyone must enable Mods & Scripts➚, then save & exit your games.

2️⃣ Download and extract S4MP from the zip file, then launch it. If it's not opening, make sure to run it as admin and exclude it from your antivirus.

3️⃣ Set the documents path in S4MP'a settings tab, by default:

- C:\Users\USER\Documents\Electronic Arts\The Sims 4

4️⃣ Set the game's folder path in S4MP's settings tab, by default:

- Origin - C:\Program Files (x86)\Origin Games\The Sims 4

- EA App - C:\Program Files\EA Games\The Sims 4

- Steam - C:\Program Files (x86)\Steam\steamapps\common\The Sims 4

5️⃣ Allow S4MP through the Firewall settings➚ to prevent connectivity issues.

6️⃣ Before playing on LAN, choose one of the following ways to connect together, although, if you're all on the same network you may skip this step.

- One player can enter their router settings to port forward 7654➚

- All players can install a VPN to emulate a Local Area Network "LAN"➚

7️⃣ Click Play on LAN in S4MP, select your prepared save game to host and share your VPN or IP address with others so that they can join the room. 

8️⃣ Once everyone's in and save synced, press Everyone's Connected and then Start Game. If the game isn't starting, you can also start it manually.

9️⃣ Let The Sims 4 load, select the same save game then load into the same household, a notification in-game should state that the multiplayer has loaded.

For further information, assistance and the list of supported/conflicting mods please visit the S4MP Discord server!

ABOUT THIS LISTING

This page describes Sims 4 Multiplayer Mod (S4MP) by SimsMultiplayer. The description and screenshots are the author's own, imported from their listing on CurseForge on 25 October 2026: https://www.curseforge.com/sims4/mods/sims-4-multiplayer-mod

Mythiq.net hosts no files for it. The download button goes straight to the release file on edge.forgecdn.net, so you are downloading from the author's own host, not from a copy of ours.

The download count, rating and comments on this page start at zero and count Mythiq.net only. The source's own figures are not copied here — they measure a different site, and a number that cannot be checked against our own ledger is not worth printing.

BASE GAME

Custom content and mods need the base game and Custom Content enabled in Game Options. Content that uses a pack's items says so on the author's page — a dress recoloured from a Cats & Dogs asset needs that pack.

GAME PATCH

Listed against game patch 1.121.342, 1.121.361, 1.121.372, 1.122.205. The Sims 4 tolerates older custom content well, but a major patch can break script-level mods until the author updates them.

SCRIPT MODS

Gameplay mods that change behaviour (rather than adding objects or clothing) may also need "Script Mods Allowed" ticked in Game Options → Other. If a gameplay mod does nothing at all, that checkbox is the first thing to check.

1. Download the archive with the button on this page and unzip it.

2. Move the .package files (or the mod's own folder) into:

Documents\Electronic Arts\The Sims 4\Mods

Subfolders inside Mods are fine; the game reads them one level deep.

3. Start the game, open Game Options → Other, and check "Enable Custom Content and Mods" (and "Script Mods Allowed" for gameplay mods). The game asks to restart — let it.

4. Custom content appears in Build/Buy or Create a Sim by name; gameplay mods announce themselves in a popup or their own menu on first load.

IF NOTHING APPEARS

Nine times out of ten the .package is inside a folder-in-a-folder. It must sit directly in Mods or one folder deep — not in the Downloads folder the zip created.