Halo 3 Mod Project Reclaimer Adds 128-Player Lobbies
Project Reclaimer is free on PC and also brings four-player split-screen, 16-player campaign co-op, dedicated servers, and a reworked Forge mode to Halo 3.
A Halo 3 mod called Project Reclaimer has been released, allowing up to 128 players in a single multiplayer lobby split into two teams of 64. The mod is available free and requires a copy of The Master Chief Collection on PC to run, according to Screen Rant.
Beyond the expanded lobby size, Project Reclaimer adds four-player split-screen, 16-player campaign co-op, dedicated servers, scripted game modes, and an improved Forge mode.
Halo 3 originally supported 16-player multiplayer lobbies, so the mod raises the ceiling considerably. The game is nearly two decades old and was developed by Bungie.
What players get
The feature set targets both competitive and cooperative play: dedicated servers support the larger matches, while 16-player campaign co-op and four-player split-screen expand the ways groups can play together.
Project Reclaimer joins a long-running modding scene around The Master Chief Collection on PC. In October 2025, fans were still awaiting news on a potential Halo 3 remake.
Quick answers
What does the Project Reclaimer mod add to Halo 3?
It enables multiplayer lobbies of up to 128 players split into two teams of 64, plus four-player split-screen, 16-player campaign co-op, dedicated servers, scripted game modes, and an improved Forge mode.
How much does Project Reclaimer cost and what do you need to run it?
The mod is free, but it requires a copy of The Master Chief Collection on PC.
How many players did Halo 3 multiplayer originally support?
Halo 3 originally supported 16-player multiplayer lobbies.