Mod Sync
Share your mods, download missing files, deploy, and launch the game from a lobby.
Mod Sync is how a lobby agrees on the same pack. The host picks mods from their Library. Guests download anything they lack, then everyone Deploys and Launches from the room.
Nexus metadata
Only mods that already have Nexus Mods identity (modId and fileId) can be shared. Import those files through Nexus / NXM so Arsenal can resolve downloads for guests. See Adding Mods.
Configure mods (host)
- Click Configure mods (pencil) or Add mods from library
- The dialog CONFIGURE MODS lists eligible Library mods
- Filter by All Library or a profile
- Search with Search mods...
- Check the mods to share (row click or checkbox). Select-all applies to the visible list
- Click Apply
Empty dialog: No mods with Nexus data in your library.
Apply sends the ordered list to the room and keeps option selections from the library or profile.
If the host has not added anything yet:
| Role | Empty copy |
|---|---|
| Host | No mods configured. Add mods from your library to share them with the lobby. |
| Guest | No mods specified. The host hasn't added any mods to this lobby yet. |
Mods required on create/edit is only a listing flag. It does not fill this list.
Load order and options (host)
Drag the handle (Drag to reorder) to change order.
Configure options opens the usual option / sub-option table. The host can save. Guests can open it read-only. After a change, that mod's deploy color turns yellow until the next successful deploy.
Guest downloads
Each row shows whether the file is already in your Library.
| Status | What to do |
|---|---|
| In Library | Green check. Ready to deploy |
| Missing | Download from Nexus. Premium accounts can download in-app with one click. Others open the Nexus file page to download in-app |
| Downloading / queued / installing | Progress overlay |
Completed lobby downloads install into the Library automatically when they belong to the room's mod set.
Deploy, purge, launch
These three buttons sit under the mod list. Host and guests can all use them.
| Button | Effect |
|---|---|
| Purge all mods | Removes deployed files from the game data folder (same as Mod Management purge) and resets lobby deploy tracking |
| Deploy | Installs the lobby loadout and selected options. Status: Deploying..., Deployed!, Failed, or Error |
| Launch Helldivers 2 | Starts the game. The button ignores extra clicks for a few seconds while it is running |
Deploy uses the lobby list and option selections, not whichever profile you had open in Mod Management.
Row colors
Same meaning as deployment status in a profile:
| Color | Meaning |
|---|---|
| Red | Not deployed |
| Yellow / orange | Deployed, but options or order changed |
| Green | Deployed and matching the snapshot |
Player badges in the room summarize how many of the lobby mods that person has deployed.