CaretakerMP is a private multiplayer toolkit for The Last Caretaker. It provides a Windows launcher, hosted private sessions, synced world installs, overlay chat, Linux server support, and Lua server scripting.

Can I play The Last Caretaker co-op with CaretakerMP?

CaretakerMP is built for focused private 2-4 player crew sessions. Players join through the CaretakerMP Launcher, install the hosted world bundle, and start the game with Bridge and overlay.

Can I host a CaretakerMP server?

Yes. Hosts can use the Windows Server GUI or a small Linux server. The host can publish a world, copy invites, check resources, create friend packages, and run support tools.

CaretakerMP - The Last Caretaker Multiplayer Toolkit

Built for small crews

A complete multiplayer foundation.

CaretakerMP keeps session authority on the server, gives players a guided launcher, and gives hosts a separate control room for worlds, resources, invites, and server health.

Server

Authoritative session core

Owns membership, rejects the 5th client, snapshots accepted player state, and keeps the first phase capped to private 4-player sessions.

Launcher

Player-first launch flow

Manages server profiles, installs the hosted world bundle, starts Bridge and chat, and launches the game with the correct environment.

Server GUI

Host control room

Starts the server, publishes named worlds, creates friend invites, checks resources, and keeps host tools separate from the player launcher.

Bridge

Small, isolated game boundary

Connects beside the game, holds a player slot, receives snapshots, syncs client Lua resources, and writes hook inbox updates.

Dedicated

Simple dedicated hosting

Designed for a small Linux VPS with UDP gameplay plus a TCP browser, world bundles, client resources, and server health metadata.

Discovery

Opt-in public visibility

Reachable hosts can appear in the main-site server viewer with live slots, world label, version, password status, and last-seen health.

Crew interface

Clear signals before anyone launches.

The website can preview the same language players see in the launcher and overlay: reachable servers, clean world install state, crew presence, and quick session actions.

Live session

Harbor Night Run

Reachable

Players2 / 4

WorldHarbor

Build0.1.0

Ping42 ms

Password World sync Lua resources

World install

Ready to join

Safe

Invite imported
SaveGames backup created
World hash verified
Bridge path ready

Quick start Join guide

Overlay feed

Crew signal

Listening

ServerWorld label matched.

NovaJoined Harbor Night Run.

BridgeSnapshots flowing.

/crewhelp /secondplayer Ctrl+M

Private session proof

Two connected players, visible in-game.

Live private session capture from CaretakerMP: the overlay radar shows two player signals, the chat feed records join and stream-in events, and the command browser exposes the available session actions.

CaretakerMP private session showing two connected player signals in the in-game overlay radar — Two-player private session **Two player signals are visible on the radar while the in-game chat confirms connection activity.**

Presence

Real crew visibility

Connected players are represented through the overlay, giving a clear signal that a private session is alive and synchronized.

Overlay

Tools inside the game

Chat, radar, command browsing, and session feedback sit on top of the game without replacing the original HUD.

CaretakerMP in-game command browser listing player commands and resources — CommandsSearchable command browser with player actions and resource context.

CaretakerMP in-game chat overlay showing join, stream-in, and chat messages — ChatSession feed for joins, stream-in notices, and player messages.

Connection flow

From local session to in-game signal.

01

Start the host

Run the Windows Server GUI or a Linux service, choose the session ports, set a private password, and start the server.

02

Publish the crew world

Upload a named SaveGames bundle with an in-game save label so friends know exactly which world to load.

03

Import and join

Players import a cmp://join invite, preview the world install, back up local saves, and start the game from the launcher.

04

Play with overlay tools

The bridge connects, the overlay shows chat and crew status, and the hook path can feed local player transforms when installed.

Already in the build

Release-ready building blocks.

The current build focuses on private release usability: safe world installs, friend invites, health checks, support packs, overlay controls, and scriptable server systems.

Friend invites

One code from host to player

Hosts copy a cmp://join invite, and players import it into the launcher with server address, ports, world label, save label, and optional password.

Server viewer

Main-site server listing

Reachable hosts can send live status updates so players see slots, world label, version, password status, and last-seen health without exposing private values.

World Safety Vault

Preview, install, and roll back worlds

The launcher previews server world bundles, verifies hashes, backs up local SaveGames, writes an install marker, and can restore the latest backup.

Preflight Doctor

Check before launch

Players and hosts can run a one-click health check for runtime files, game path, saves, hook files, resources, ports, and server compatibility.

Release Health

Version and protocol clarity

Launcher, Bridge, server, and support packs carry release metadata so stale builds and protocol mismatches are visible before a session derails.

Overlay tools

Chat, radar, notifications, and crew tools

The chat overlay adds passive chat, event toasts, player menu, command browser, Crew HUD, Signal Doctor, Quick Actions, Session Journal, Radar/Minimap, and MOTD card.

Player Passport

Move your identity and favorites

Players can export a private Passport with their locked Player ID, server favorites, and installed-world markers without logs, game files, or SaveGames.

Friend Pack

Clean private ZIPs for trusted crews

Hosts can build a private Windows package with exes, assets, resources, hook template, docs, quickstart, manifest, and checksums.

Lua gameplay layer

Scriptable crews, teams, activities, and markers

Resources cover commands, events, RPC, teams, instances, activities, objectives, inventory state, checkpoints, markers, entities, and world metadata.

Linux hosting

Small-server friendly hosting

Run a headless server on Ubuntu or Debian with Node.js 20+, open UDP 7777 and TCP 7778, and keep it alive with systemd.

.\CaretakerMP.ServerGui.exe
.\CaretakerMP.Launcher.exe

# host a Windows session
.\CaretakerMP.ServerGui.exe

# host a headless server
.\CaretakerMP.Server.exe --host 0.0.0.0 --port 7777 --httpPort 7778 --maxPlayers 4

Quick start

Start from the CaretakerMP folder.

Start with the player launcher for joining. Hosts use the Server GUI on Windows or the headless server on Linux. The wiki includes step-by-step install, join, hosting, world-sync, and support flows.

CaretakerMP.Server.exe CaretakerMP.ServerGui.exe CaretakerMP.Launcher.exe CaretakerMP.Bridge.exe CaretakerMP.ChatOverlay.exe CaretakerMP.HookProbe.exe CaretakerMP.Doctor.exe CaretakerMP.Support.exe CaretakerMP.Packager.exe CaretakerMP.Passport.exe CaretakerMP.WorldVault.exe CaretakerMP.WorldSync.exe resources/caretaker-core

Open the CaretakerMP wiki

DevLog

Recent work from the build room.

Short release notes for players and hosts: what changed, why it matters, and which part of the CaretakerMP session experience moved forward.

May 17, 2026 · 22:40 CEST World sync

World objects now have an authoritative session path.

Lights, switches, doors, cables, outlets, stations, and power modules can now move through a server-owned state layer.

May 17, 2026 · 21:15 CEST Session proof

Two-player presence is visible in-game.

Radar, chat, command browsing, and stream-in messages now show the private session loop working together.

May 17, 2026 · 18:30 CEST Discovery

The public server viewer is connected to real host updates.

Reachable hosts can publish live slots, version, password status, world label, and last-seen health without exposing secrets.

Open all DevLogs

Release toolkit

What ships with the current build.

Player Launcher

Server profiles, invite import, world preview/install, Smart Launch Guard, Bridge, game launch, PID-tied overlay, and hook install.

Server GUI

Host profile setup, server start/stop, passworded sessions, public-host validation for listings, Auto second player, world publishing, friend invites, resource checks, and support packs.

World sync

Named world metadata, in-game save label, bundle archive, SHA verification, preview diff, local backup, and rollback.

Player tools

Export/import Passport, create sanitized support packs, read Release Health, and keep stable identity across installs.

Overlay tools

Chat feed, no-activate HUD notifications, MOTD, player menu, command browser, Crew HUD, Signal Doctor, Quick Actions, Session Journal, and Radar.

Server discovery

Opt-in live status updates from hosted servers populate /servers.html with slots, password status, protocol/version, world label, and last-seen health.

Lua systems

Resources for commands, RPC, state bags, markers, checkpoints, zones, instances, teams, activities, inventory state, and entities.

Windows and Linux paths

Windows friend packages for players and a headless Linux service path for always-on private crew servers.

The Last Caretaker multiplayer FAQ

What players usually ask first.

What is CaretakerMP?

CaretakerMP is a private multiplayer toolkit for The Last Caretaker with a launcher, private server hosting, synced world installs, overlay chat, and Lua server scripting.

How do players join?

Players import a host invite in the launcher, run Preflight, preview and install the hosted world, then start the game with Bridge and overlay.

Can hosts run a private server?

Yes. Hosts can use the Windows Server GUI or a Linux server, publish a crew world, copy invites, package a Friend Pack, and add Lua resources.

Clean boundary

Independent, private, and deliberately careful.

CaretakerMP does not ship game binaries, extracted assets, keys, decrypted content, DRM bypasses, or proprietary mappings. The bridge is intended for legitimate local installs, with official modding support preferred wherever it is available.

Optional support

Support the project.

CaretakerMP is free to use. A donation is never required and does not unlock anything; it helps cover hosting, tooling, verification time, and the routine maintenance that keeps releases usable.

Support on Buy Me a Coffee