Halo PC Community Launches Reclaimer: 128-Player Mod Support, 16-Player Co-Op, Enhanced Forge
A community-built launcher for Halo: The Master Chief Collection introduces massive multiplayer capacity, campaign co-op and automatic mod downloading for PC users.

Key points
- The launcher supports up to 128 players in multiplayer matches, including 64-on-64 team battles with full mod support.
- Campaign co-op is expanded to allow up to 16 players to participate simultaneously with custom character options.
- Forge tools have been significantly enhanced, allowing creators to use objects from various maps and place AI units.
A community-driven project known as Project Reclaimer has released a new launcher for Halo 3 on PC, significantly expanding the game’s multiplayer capabilities. According to a report by Windows Central, this tool runs directly off an existing installation of Halo: The Master Chief Collection. The update introduces support for 128-player multiplayer matches, sixteen-player campaign co-op, and four-player online split-screen functionality.
How it unfolded
- Project Reclaimer was developed by the community to enhance Halo 3, which originally released on Xbox 360 almost two decades ago.
- The new launcher allows players to access the original Halo 3 menu and a dedicated server browser for selecting matches.
- Developers added automatic mod downloading, ensuring that users join servers with the necessary files without manual searching.
Who is affected
PC gamers who own Halo: The Master Chief Collection are the primary beneficiaries of these changes. Windows Central notes that the project is currently PC-only, excluding console users from these specific features. The expansion allows for 64-on-64 team battles, a scale far beyond the original game’s limits. Additionally, the restoration of four-player split-screen enables local groups to play together online via community servers, rather than being restricted to a single local network.
The fix
No security patch or official vendor fix is involved in this release, as Project Reclaimer is an unofficial community initiative. The tool relies on the user’s legitimate copy of Halo: The Master Chief Collection to function. According to Windows Central, the project is described as a "labor of love" that builds a community multiplayer platform around the older title. Users should be aware that this is not an official product from the franchise owners.
What to do and how to stay safe: Halo 3
- Verify that your copy of Halo: The Master Chief Collection is genuine before installing third-party launchers.
- Check the source of Project Reclaimer downloads to ensure you are obtaining the official community version.
- Monitor system resources, as running 128-player matches may require significant hardware capability.
- Keep your PC operating system and drivers updated to maintain compatibility with the new launcher features.
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General security guidance from the Malware Brief newsroom. It is not confirmed advice from the organisations named in this story.
Frequently asked questions
Do I need to own Halo: The Master Chief Collection to use Project Reclaimer?
Yes, the launcher runs directly off your installation of the base game, so ownership is required.
Is Project Reclaimer available on Xbox consoles?
No, according to Windows Central, the project is currently PC-only.
Can I play Halo 3 campaign with more than four players?
Yes, the launcher supports up to 16 players in campaign co-op mode.



