Halo 3 PC Multiplayer Modding Project

Project Reclaimer Wiki

Project Reclaimer is a standalone Halo 3 PC launcher with dedicated servers, server browsing, expanded Forge, campaign co-op, custom modes, and automatic mod downloads.

Project Reclaimer Resources

Eight quick-jump hubs covering downloads, servers, Forge, mods, and game modes

Latest Updates

Discover the newest guides, tips, and content

Project Reclaimer 128 Player: Large-Scale Halo 3 Setup Guide

Learn how Project Reclaimer 128 player battles work on Halo 3 PC, from client setup to server hosting, Forge maps, and mod downloads.

Oct 9, 2026multiplayer
Read more →
Project Reclaimer 16 Player Cooperative Campaign: Setup Guide

Learn how to set up Project Reclaimer 16 player campaign co-op in Halo 3: mission selection, difficulty, modifiers, mods, and mid-session joining.

Oct 9, 2026multiplayer
Read more →
Project Reclaimer 32 Player: Match Setup Guide

Learn how Project Reclaimer 32 player Halo 3 matches work, from server settings and map picks to hosting, joining, and performance tips.

Oct 9, 2026multiplayer
Read more →
Project Reclaimer 60 Player: Mid-Size Server Setup Guide

Learn how Project Reclaimer supports 60-player Halo 3 sessions, from server configuration and mod handling to hosting options and connection tips.

Oct 9, 2026multiplayer
Read more →
Project Reclaimer 64 Player: Large-Scale Halo 3 Match Setup Guide

Learn how Project Reclaimer handles 64-player Halo 3 sessions, server slots, map choice, dedicated servers, and performance tips for big matches.

Oct 9, 2026multiplayer
Read more →
Project Reclaimer Android: Platform Support & Setup Guide

Is Project Reclaimer on Android? Learn platform availability, PC requirements, cloud streaming workarounds, and the full setup guide for Halo 3 multiplayer.

Oct 9, 2026platform
Read more →
Project Reclaimer Building Asset Library: Forge Objects Setup Guide

Learn how the Project Reclaimer building asset library organizes STOCK, BUILT-IN, and MOD Forge objects for Halo 3 custom maps.

Oct 9, 2026modding
Read more →
Project Reclaimer Custom Gamemodes: Setup & Scripting Guide

Learn how Project Reclaimer custom gamemodes work: built-in scripted modes, Megalo scripting, JSON configuration, servers, and creation tips.

Oct 9, 2026modding
Read more →
Project Reclaimer Download: Setup Guide & System Requirements

Get the Project Reclaimer client, dedicated server, and RCON tool. Learn system requirements, installation steps, and how to launch Halo 3 multiplayer on PC.

Oct 9, 2026guide
Read more →
Project Reclaimer Forge Maps: Step-by-Step Building Guide

Learn how to build, edit, and test Project Reclaimer Forge maps with this step-by-step guide covering objects, AI tools, and multiplayer testing.

Oct 9, 2026modding
Read more →
Project Reclaimer Halo 3: Setup Guide, Servers & Mods

Learn how to install and play Project Reclaimer for Halo 3 PC: server browser, 16-player campaign co-op, expanded Forge, mods, and dedicated servers.

Oct 9, 2026modding
Read more →
Project Reclaimer Halo 3 AI: Forge AI Setup Guide

Learn how to place, configure, and test Halo 3 AI in Project Reclaimer Forge, including object sources, campaign units, vehicles, and testing tips.

Oct 9, 2026technical
Read more →

Project Reclaimer Download

Project Reclaimer ships as separate downloads for players, server operators, and administrators. Pick the package that matches your setup, then make sure the required Halo installation is in place before launching.

Project Reclaimer Client

Players

The standalone game client for launching Project Reclaimer, browsing servers, joining sessions, and picking up server-required content.

  • Join public servers
  • Play custom maps and modes
  • Connect with friends through the server browser or Discord

Project Reclaimer Dedicated Server

Server Operators

The dedicated server package for hosting Project Reclaimer sessions independently from the player client.

  • Run a persistent multiplayer server
  • Host custom maps and game modes
  • Manage a private community server

Project Reclaimer RCON Tool

Administrators

A remote administration utility for managing a Project Reclaimer server without opening the in-game interface.

  • Run server commands remotely
  • Manage players and sessions
  • Support automated admin workflows

Halo: The Master Chief Collection

Required

The Steam edition of Halo: The Master Chief Collection provides the base installation that Project Reclaimer runs alongside.

  • Steam install of Halo: The Master Chief Collection
  • Halo 3 Campaign and/or Multiplayer content installed
  • A Windows PC that runs the MCC content
  • Internet access for downloads and online sessions

Project Reclaimer Beginner Guide

Project Reclaimer runs as an independent client next to your existing Halo installation. You never need to open the MCC menu, and nothing in your original game files is touched. Set it up once and the whole multiplayer flow lives in one launcher.

1

Install the required Halo content

Install Halo: The Master Chief Collection through Steam and make sure the Halo 3 content your target servers use is available on your PC.

2

Download and install Project Reclaimer

Grab the latest client from the releases page and keep it in its own folder, separate from the MCC installation.

3

Launch the standalone client

Start Project Reclaimer directly from its executable or shortcut. The client brings the game entry point, the server browser, and content handling together in one place.

4

Set your account nickname

Open the profile settings, choose the nickname you want shown in sessions and server lists, and save it before joining a server.

5

Find and join a server

Filter the server list by map, game type, version, or latency, pick a session with a free slot, and connect straight from the client.

Quick Tips

  • Project Reclaimer works with your existing installation and never rewrites the original game files.
  • Keep Steam installed and signed in, but you do not need to enter the MCC in-game menu.
  • Launch the client directly — opening the MCC launcher first is not required.
  • Use a recognizable nickname so friends and server admins can identify you.
  • If a server needs custom content, the client downloads it before the session starts.

Project Reclaimer Server Browser

The server browser gives you everything needed to compare active sessions before connecting. Start with broad filters, inspect the details, and join from the client — missing custom content is handled before the match begins.

FilterWhat it showsHow to use itWhat you do
MapThe map or multiplayer environment currently selected by the server.Filter by a familiar map for a specific arena, or leave it broad to discover custom content.Pick a server whose map matches the session you want.
Game TypeThe active ruleset or multiplayer mode for the server.Use the game-type filter to separate standard multiplayer from custom and scripted modes.Check the mode before joining so the rules match your expectations.
VersionThe Project Reclaimer version or compatibility information reported by the server.Prefer servers compatible with the client version installed on your PC.Update the client when a server requires a newer release.
ModsWhether the server runs custom maps, campaign content, Forge creations, or mode scripts.Inspect the details before joining and let the client fetch missing files when prompted.Confirm the download, wait for installation, and reconnect if asked.
VPNWhether the connection is associated with a VPN or network path that can affect server access.Use the indicator when troubleshooting connectivity or picking a less restricted route.Try a direct connection or another server if the session will not load.
LatencyThe network response time between your client and the server.Sort or filter by latency to find servers closer to your network.Prefer lower-latency servers for more responsive multiplayer.
DiscordShared server addresses, invitations, and community connection details.Open the shared information and use it with the client or server browser.Join the same server as your friends and let required content finish downloading.

Project Reclaimer Mods

Custom content spans new multiplayer maps, campaign experiences, Forge creations, and scripted game modes. Servers advertise what they use, Steam Workshop covers supported items, and the client can pull missing files automatically — you spend time playing, not copying files.

Community-built environments with new layouts and gameplay spaces for fresh multiplayer experiences.

  • Custom arena layouts
  • Community multiplayer environments
  • Server-specific map rotations

Custom campaign missions and cooperative scenarios that expand the sessions available through Project Reclaimer.

  • Custom campaign missions
  • Cooperative playthroughs
  • Community-authored story content

Forge Creations

Forge Content

Player-built maps and gameplay spaces shared through servers or supported Workshop workflows.

  • Experimental map designs
  • Community-built arenas
  • Objective-focused custom layouts

Rules, scripts, and gameplay logic that reshape how a server session plays beyond standard settings.

  • Custom objectives
  • Special gameplay rules
  • Server-specific scripted events

Supported content ships through Steam Workshop with a familiar subscribe-and-update workflow for creators and players.

  • Subscribe to published content
  • Keep supported items updated
  • Organize community releases

Servers provide or advertise the files their maps and modes need, so joining players can acquire missing content automatically.

  • Join modded public servers
  • Synchronize map and mode dependencies
  • Skip manual file setup

How installation works

When you join a server running content you do not have, the client prompts you to download it. Accept the prompt, let the installation finish, and reconnect if the server asks.

Project Reclaimer Forge Guide

Project Reclaimer expands the classic Forge workflow with extra editing capabilities, more map objects, AI-oriented tools, frozen-object editing, and larger construction budgets. This walkthrough covers the first questions every creator has: where Forge starts, what you can place, how saves work, and how to test a map with friends.

1

Open Forge and choose a starting map

Launch Forge from the play options, select a compatible multiplayer map, and enter the editor before placing or modifying anything.

2

Place and organize map objects

Use the object palette to add gameplay pieces, scenery, structures, spawn objects, and mod content, shaping the main layout first.

3

Edit frozen objects and large builds

Freeze finished sections to protect them, then use the expanded editing workflow to refine details and assemble bigger structures than a basic Forge session allows.

4

Add gameplay behavior and AI elements

Configure supported gameplay objects and Halo 3 AI elements where the map and mode allow them, then verify how they behave in a real play session.

5

Save, reload, and validate the map

Save through the available Forge workflow, reload the map, and confirm object positions, gameplay settings, and modifications all persisted.

6

Test the map with friends

Create or join a multiplayer session on your map and verify spawning, objectives, boundaries, performance, and movement with more than one player.

Quick Tips

  • Build the main layout before fine-tuning decorative objects.
  • Freeze completed sections to avoid accidental changes during later edits.
  • Keep paths, sightlines, and player movement in mind when placing structures.
  • Change one gameplay variable at a time so unexpected behavior is easy to trace.
  • Save before major structural changes and keep separate iterations when experimenting.
  • Test in the mode the map was designed for, and ask friends to check areas that are hard to judge alone.

Project Reclaimer Campaign Co-op

Halo 3 campaign runs solo, on split-screen, or online with groups of up to 16 players. Pick the mission, difficulty, starting point, and modifiers — and campaign mods ride the exact same flow.

Start a solo session, gather around split-screen for local play, or open an online cooperative session for a large group.

  • Solo is ideal for learning a mission
  • Split-screen keeps everyone on one screen
  • Online co-op scales up to 16 players

Select mission and starting point

Setup

Pick the Halo 3 campaign mission, then choose the starting point or checkpoint intended for the session.

  • Early starts for a full mission run
  • Later starts for testing a specific encounter
  • Align everyone on the mission before launch

Choose the intended difficulty and apply any campaign modifiers supported by the current setup.

  • Difficulty shapes enemy pressure
  • Modifiers can change session rules
  • Match settings when reproducing results

Place the modification in the supported content location and load it when creating the session.

  • Everyone needs compatible content
  • Check mission and mod compatibility
  • Return to the stock campaign to compare behavior

When a session needs custom campaign content, connected players can fetch the required files before joining the mission.

  • Wait for transfers before starting
  • Incomplete content blocks entry
  • Keep host mission, version, and modifiers consistent

Players can drop into an active campaign through the supported mid-game join flow, where the mission state allows it.

  • Joining depends on the current encounter
  • New arrivals wait for the session to load
  • The host restarts if the session hits an invalid state

Project Reclaimer Dedicated Server

A dedicated server gives you a persistent multiplayer environment instead of a temporary player-hosted session. Setup covers the runtime, configuration files, network ports, map and mod directories, automatic recovery, admin permissions, anti-cheat, and remote management.

1

Choose a deployment environment

Windows for a straightforward desktop install, Windows Server for persistent hosted machines, or Linux through Docker for containerized deployment.

2

Install the server runtime and release files

Download the server release, extract it to a dedicated directory, and keep executables separate from user-generated maps, mods, and logs.

3

Configure the server and network ports

Edit the configuration with your session settings, bind address, query and admin options, and the network ports your deployment requires.

4

Add maps and mods to the right directories

Place map files and mod content in the directories the server expects, then reference them in the server configuration.

5

Set admins, anti-cheat, and bans

Fill the administrator list and enable the available anti-cheat protections before opening the server to public players.

6

Enable automatic restart and health checks

Run the server under a process supervisor, service manager, or container restart policy so it recovers from crashes and planned restarts.

7

Manage the server with RCON

Use RCON to monitor sessions, change maps and settings, kick players, and apply bans without direct access to the host machine.

Quick Tips

  • Back up configuration files before upgrades and record the installed release version.
  • Allow the required ports through the firewall and forward them when the host sits behind NAT.
  • Keep filenames and configuration references consistent, and restart after adding content.
  • Grant admin access only to trusted operators and keep a ban list for repeat offenders.
  • Keep anti-cheat protections enabled for public sessions.
  • Restrict RCON to trusted networks, use a strong password, and test commands before going unattended.

Project Reclaimer Game Modes

Project Reclaimer ships ready-to-play scripted modes alongside full creation tools. The built-in examples show how a mode tracks players, reacts to events, controls objectives, updates the HUD, and manages rounds — use them as references when building your own mode on a Slayer foundation.

Gun Game

Progression

A weapon-progression mode where players advance through a sequence of weapons and loadouts as they earn progress.

  • Define the progression order
  • Track player advancement
  • Award the next weapon after each event
  • Handle the final state and victory

Growth

Player State

A mode centered on shifting player power, equipment, and status as the match progresses.

  • Track growth levels per player or team
  • Apply changes when conditions are met
  • Keep HUD state readable
  • End the round at the target state

One in the Chamber

Limited Ammo

A restricted-ammunition mode built around careful engagements and a limited-resource loop.

  • Set the starting ammunition state
  • Restore resources on eliminations
  • Handle out-of-ammo players
  • Use round logic to close the match

Zone Control

Objective

A territorial mode where teams convert control of designated areas into score and progress.

  • Create and identify active zones
  • Detect presence and contesting states
  • Award progress while in control
  • Rotate or complete the objective by round rules

Flood Infection

Infection

An infection-style mode where humans face the Flood and the match state flips with every conversion.

  • Define the initial role assignment
  • Convert players on infection events
  • Track humans and Flood remaining
  • End on the configured victory condition

JSON Configuration

Data Layer

JSON provides the structured configuration layer for mode settings, values, object references, and script data.

  • Organize names and values by purpose
  • Use consistent identifiers
  • Validate the structure before loading
  • Keep configuration separate from logic

Megalo Scripting

Logic Layer

Megalo supplies the gameplay logic that reacts to events, evaluates conditions, and modifies variables to control the match.

  • Start from a Slayer-style foundation
  • Add player, team, score, and round variables
  • Connect events to conditions and actions
  • Test each rule independently

Timers, Zones, HUD, Rounds

Building Blocks

Timers, regions, HUD elements, and round controllers are the reusable systems behind objective and custom modes.

  • Timers for captures, cooldowns, and limits
  • Zones for presence and objective control
  • HUD elements for score and status
  • Round logic for resets and victory

Project Reclaimer Wiki

Your complete resource hub for Project Reclaimer install guides, server browser setup, dedicated servers, Forge, mods, campaign co-op, and Halo 3 PC multiplayer.

© 2026 Project Reclaimer Wiki. Not affiliated with Microsoft, Xbox Game Studios, Halo Studios, Bungie, or Valve Corporation.

Unofficial fan-made resource website. Project Reclaimer requires a legitimate copy of Halo: The Master Chief Collection on Steam.