Fomo

v1.2.9·Updated 2026-04-18

FOMO: A mod for On-Together to expand chat size, log chats, and relay messages via WebSocket. Use /fomohelp

About this mod Author’s original text

Fomo

A BepInEx mod for On Together that enhances the in-game chat with configurable message limits and in-game utility commands.

Features

  • In-game commands:: Toggle and configure all features without leaving the game
  • Configurable chat history length:: Increase how many messages are visible in the global and local chat windows
  • Message UI Redirection:: Subscription to message UI allows for redirection to logs, websocket, telegram, etc.
  • Host join notification:: When a player joins, the host sees an additional notification with their Steam ID

Looking for WebSocket support? Install the FomoWebSocket add-on.

Looking for chat file logging? Install the FomoChatLog add-on.

Looking for Telegram support? Install the FomoTelegram add-on.

In-Game Commands

Type any command into the in-game chat. Commands start with / and are not sent to other players.

  • /fomohelp (/fh):: Lists all available commands
  • /fomotoggle (/ft):: Toggle Fomo feature on/off
  • /fomomessagelimit [global|local] (/fml):: Set the global or local chat message window size
  • /fomochatsinkcleantags (/fcsct):: Toggle stripping TMP tags from all sink output
  • /fomoincomingmode [global|local] (/fim):: Toggle or set the channel for incoming messages from external sources (Telegram, WebSocket); no argument toggles

Examples

/fomosetmessagelimit global 100

/fsml local 50

Configuration

Located in BepInEx/config/com.andrewlin.ontogether.fomo.cfg

  • General
  • EnableFeature (default: true):: Enable or disable all mod features
  • ShowCommand (default: false):: Show commands in chat when used
  • CleanChatSinkTags (default: false):: Strip TMP color/formatting tags from messages before dispatching to any sink
  • Chat
  • GlobalMessageLimitCount (default: 50):: Max messages shown in global chat window
  • LocalMessageLimitCount (default: 25):: Max messages shown in local chat window
  • ChatLogLocalRange (default: 5):: Local range threshold for relaying local chat messages to sinks
  • DispatchIncomingLocal (default: false):: When true, messages from external sources (Telegram, WebSocket, etc.) are sent as local chat instead of global

Installation

Use r2modman or the app for the simplest install.

Manual:

  • Install BepInEx into your On Together game folder
  • Copy AndrewLin.Fomo.dll into BepInEx/plugins/
  • Launch the game — a config file will be generated at BepInEx/config/com.andrewlin.ontogether.fomo.cfg

Install & use Install: follow the bundled instructions

  1. Unzip the archive from playbuff and read the bundled readme / instructions first.
  2. Most mods rely on the game's mod loader — the usual route is a community mod manager (such as r2modman): pick this game, install, and it handles the loader and dependencies.
  3. For a manual install, put the mod files into the matching Mod / plugins folder inside the game directory.
  4. Launch the game to confirm it loaded; mods with listed dependencies need those installed as well.

Install locations vary a lot between mods — the bundled readme is the most reliable guide.

Dependencies

Install these first, or the mod will not work:

BepInEx-BepInExPackAndrewLin-Alpha

File & checksum

Filename
Fomo-1.2.9.zip
File size
43.9 KiB