Rooms
Create a lobby, manage players and chat, invite, and host tools.
A room is a live session: players, chat, a shared mod list, and deploy / launch controls. You enter it by joining from the listing or by creating a lobby.
Create Lobby
Click Create on the listing.
| Field | Default | Notes |
|---|---|---|
| Lobby Name | (empty, placeholder My Lobby) | Required. Maximum 40 characters |
| Region | Europe West | Same regions as the listing filters |
| Difficulty | 1 Trivial | Levels 1 through 10 |
| Faction | Terminids | Terminids, Automatons, or Illuminates |
| Password | empty | Optional. Leave empty for a public room |
| Mods required | Off | Listing badge only. It does not add mods by itself |
Click Create. The loader shows Creating lobby.... You enter the room as host with an empty mod list. Configure mods in Mod Sync.
Mods required means the listing shows the filled box icon. Guests are not blocked from joining without those files. The host still chooses the actual loadout in the room.
Room layout
| Area | Contents |
|---|---|
| Header | Leave, faction, name, difficulty, mute sounds, and (host) edit settings |
| Players | Occupied slots, empty slots, deploy badges, host crown |
| Chat | Messages, emoji, join/leave notices |
| Mods | Shared loadout plus Purge, Deploy, and Launch |
| Host Friend Code | Copy the host's Helldivers 2 friend code |
Mute is remembered between sessions.
Closing Arsenal while you are in a room asks for confirmation. Leaving the room also asks Are you sure you want to leave this lobby?
Host vs guest
| Action | Host | Guest |
|---|---|---|
| Edit lobby settings | Yes | No |
| Configure and reorder mods | Yes | No |
| Set mod options | Yes | View only |
| Download missing mods | / | Yes |
| Deploy, Purge, Launch | Yes | Yes |
| Edit the displayed friend code | Yes | Copy only |
| Kick, ban, transfer leadership | Yes | No |
| Invite from an empty slot | Yes | No |
Players
Each filled slot shows avatar, clan tag, name, role, and a deploy badge (deployed / total).
| Badge color | Meaning |
|---|---|
| Green | Every lobby mod is deployed and unchanged |
| Yellow / orange | Deployed, but something changed since last deploy |
| Red | Not fully deployed |
Empty slots are labeled Empty slot. The host clicks + to Invite Players (online Friends and Clan Members, with search). Send Invites confirms.
Incoming invites elsewhere show Lobby Invitation with Join or Decline (auto-dismiss after 30 seconds).
Host moderation
Right-click another player:
| Action | Confirm |
|---|---|
| Make Leader | Transfer Leadership |
| Kick Player | They leave the room and can rejoin |
| Ban Player | They cannot rejoin that lobby |
The target sees Kicked or Banned.
Chat
Type in Type a message.... Maximum 200 characters. Messages are logged for moderation purposes.
Nexus Mods URLs in chat open externally. Emoji picker and autocomplete are on the input.
While scrolled up, a pill shows new message / new messages. Unread counts also appear on the sidebar Lobby button when you leave the Lobby menu.
Edit settings
The host gear opens Edit Lobby Settings (same fields as create). Leave the password blank to keep the current one. Show/Hide password toggles visibility. Save Changes applies.
Friend code
Host Friend Code is for adding each other in Helldivers 2, not for joining the Arsenal room.
| Action | Who |
|---|---|
| Copy | Anyone, by clicking the code |
| Edit Friend Code | Host: set all 8 digits, or Remove Friend Code |