How To Play Fallout 4 Multiplayer Mod With Friends (2026)

Fallout 4 still has no official multiplayer. But on PC, a new free mod called F4Multiplayer, released in October 2026, adds online co-op for up to 4 players through Steam. It is an early alpha with bugs, and it does not work on consoles. The old F4MP mod is dead, and Fallout 76 remains the official multiplayer Fallout.

Fallout 4 is an exciting open-world action RPG developed by Bethesda Game Studios, set in a post-apocalyptic Boston. You explore the wasteland, complete quests, and build settlements while finding out the secrets kept from the people. Like many fans, I love the game but hate that Fallout 4 doesn’t have multiplayer. I’ve always wished for a multiplayer mode to survive the wastelands with friends!

For years, the best-known attempt was the Fallout 4 Multiplayer Mod (F4MP), but it was abandoned in 2021. In October 2026, a new mod called F4Multiplayer arrived on Nexus Mods and finally brought working co-op to the PC version. Here is what it does, how to set it up, and what happened to the older mods.

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Does Fallout 4 Have An Official Multiplayer?

No. Fallout 4 is a single-player game, and the Anniversary Edition released in November 2025 did not change that. It added all six DLCs, over 150 Creation Club items and an in-game Creations menu, but no co-op. All multiplayer options come from fan-made mods, and they only work on PC.

Is The Multiplayer Mod Still Working?

The old one is not, but there is a new one. F4MP, the original Fallout 4 Multiplayer Mod, was officially declared dead in 2021 because the team ran out of volunteers. Fallout Together, a co-op project from people behind Skyrim Together, was paused in 2022 and never released.

The new option is F4Multiplayer. It launched on Nexus Mods on October 7, 2026, and version 0.10.0 arrived on October 28, 2026. It is free, open source and still in early alpha, so expect crashes and sync problems. Back up your saves, or use a separate save for co-op.

Between Which Platforms Is It Available?

PC only. F4Multiplayer needs the Steam version of Fallout 4 on Windows. It does not work on PlayStation, Xbox or Switch 2, because console mods cannot add multiplayer. There is no crossplay of any kind.

How To Play With Multiplayer Mod In Fallout 4

F4Multiplayer uses Steam invites, so you do not need a dedicated server, port forwarding or any network setup. One player hosts, and up to three friends join through the Steam overlay.

• Each player keeps their own save, character and inventory.
• New characters play the Vault 111 intro alone, then join the shared world when they leave the vault.
• Enemies, loot, doors, locks, time of day and weather stay in sync. The world catches up when you reconnect, load a save or die.
• Side quests are shared. Each player plays the main story in their own game, but the host can switch on a shared story setting.

Note:

If you want something more stable, Fallout 76 multiplayer is the official way to play Fallout with friends. It got native PS5 and Xbox Series X|S versions as a free upgrade in September 2026.

How To Install Multiplayer Mod For Fallout 4

To set up F4Multiplayer:

1. Make sure Fallout 4 on Steam is updated to the current version (1.11.240 as of October 2026).
2. Install Fallout 4 Script Extender (F4SE) version 0.7.9.
3. Install Address Library for F4SE Plugins from Nexus Mods.
4. Download F4Multiplayer from Nexus Mods and install it with a mod manager such as Vortex or Mod Organizer 2.
5. The host turns on host mode in the mod’s settings file. Everyone launches the game through F4SE and loads a save, then the host invites friends through the Steam overlay. Every player needs the same mod version and the same load order.

Check the mod’s Nexus page for the latest version and any extra steps before you start.

Fallout 4 Local Co-op And Split Screen

Fallout 4 has no local co-op or split-screen, and no working mod adds it. F4Multiplayer is online only, so each player needs their own PC and copy of the game.

Multiplayer Features

F4Multiplayer is early, but it already does a lot:

• Shared combat: everyone fights the same enemies in the same place. Teammates get half the XP for your kills.
• Synced world: enemies, loot, doors, locks, time of day and weather match for everyone. Locations one player finds show up on everyone’s map.
• Shared side quests, with an option for the host to share the main story.
• Revives: a lethal hit knocks you down, and a teammate can get you up. If nobody helps within 45 seconds, you die as usual.
• Steam voice chat that gets quieter with distance, plus a player list, a ping and teleporting to friends.

Current limits:

• Other players look like settlers wearing their gear, with no faces or hair yet.
• Their shots have no muzzle flash.
• Radiant quests and settlement building are not shared yet.
• Crashes and desync can happen, so save often.

Looking For A Team To Play Fallout Together? Try GameTree

Co-op is only fun with the right people. The GameTree app matches you with players by personality and the games you like, so you can find a crew for Fallout 4 co-op or Fallout 76. You can also join the GameTree LFG Discord, with about 28,500 members, at discord.gg/6duvwHx2Q2 and use the Scout bot’s /lfg command to find players.

Final Thoughts

Fallout 4 still has no official multiplayer, but for the first time in years there is a working co-op mod. F4Multiplayer brings up to 4-player online co-op to PC, as long as you can live with alpha bugs. If you are on console or want a stable experience, Fallout 76 is still the official way to explore the wasteland with friends.

Bethesda’s Starfield is also single-player only. If you want RPGs with real co-op, Baldur’s Gate 3 is a great pick.