Hi, I'm pancreations — a 3D animator. I really don't like AI art, but I also really want to play MCC in VR, so I'm taking one for the team. Follow me on Instagram if you like silly animations made by humans in Blender. (Expect me to quit at any moment.)

Living Fray is starting his MCC VR mod back up — if you'd rather run unsigned code made by a human, wait for his.

A native OpenXR VR mod for Halo 3 and Halo 3: ODST in the Steam edition of Halo: The Master Chief Collection.

The current known-good release is MCC VR Alpha 0.2.2. It is an alpha: use it at your own risk, launch only without anti-cheat, and expect incomplete hardware and gameplay coverage.

• Per-eye stereo and 6DOF head tracking.
• Motion-controller input, weapon aim, arm IK, snap/smooth turning, melee, grenades, and menu control.
• Native HUD, authored floating weapon crosshair, scopes, resolution scaling, comfort controls, and a shared F1 configuration menu.
• Halo 3 campaign behavior, including cutscenes, pause/resume, death/respawn, and mission transitions.
• ODST stereo, controls, weapons/hands, native HUD, cutscenes, vibration, death/respawn recovery, and one tested drivable car.

Known limitations:

• ODST's first captioned opening cutscene can be black. Skip that first scene once; do not repeatedly skip or you will miss the working drop sequence.
• MCC can retain multiple title modules after switching games. If a level returns to the menu, fully close and restart MCC.
• ODST brightness stays at the game default.
• Broader ODST weapon, turret, passenger-gun, vehicle, co-op, headset, and long-session coverage is still needed.

The exact accepted source and artifact hashes are in docs/CURRENT-STATE.md.

There is no installer script.

1. Download the binary asset MCC_VR_ALPHA_0.2.2.zip from the official 0.2.2 release page.
2. In Steam, open MCC's Manage > Browse local files folder.
3. Create a folder named exactly Halo_MCC_VR in the main MCC folder.
4. Copy halo3xr.dll and halo3xr_launcher.exe into that folder.
5. Make SteamVR the default OpenXR runtime, start Steam and SteamVR, then run halo3xr_launcher.exe.

The final path must end in:

Halo The Master Chief Collection\Halo_MCC_VR\halo3xr_launcher.exe

Do not place the files loose in the MCC root. To update, close MCC and replace only the DLL and launcher; keep halomccvr.cfg. To uninstall, close MCC and delete only the dedicated Halo_MCC_VR folder.

If one PC behaves differently, first confirm SteamVR is still the default OpenXR runtime, fully close every MCC process before relaunching, compare the installed hashes below, and compare halomccvr.cfg. Do not use a repository build folder as an installation source.

Release 0.2.2 hashes:

ZIP      43E52AEF5A2D1647A8F3AE6AEFDB6C22F0C67C7AA06FD70D327FB3E00ACF5DCC
DLL      1E3F0F7E1D67DB7F322FF0B2C0236CA8708E4C9EC204EDE83484DBD6BBAF3BD6
Launcher FA95B264630D42594581E4D2F8E1103FE4DB2D0711714DA4F62AA6175155C534

Windows security software may flag or quarantine unsigned injection-based VR mods. Download only from the official release, verify the hashes, inspect the source if desired, and allow only the two release files rather than disabling security software globally.

ODST's look settings control how quickly bullet direction catches the motion-controller crosshair. If shots trail, confirm sensitivity is at maximum and acceleration is off.

Settings live in Halo_MCC_VR\halomccvr.cfg. The game creates this documented file on first launch; the F1 menu edits the same values. Deleting only that file with MCC closed regenerates the release defaults.

See BUILDING.md. A clean build uses the accepted source and configuration, but produces a new, unaccepted candidate and file hash. Only the published hashes remain accepted until that rebuilt candidate passes a headset test. Use the released ZIP when you need the exact accepted binaries.

• Current accepted baseline
• Halo 3 reverse-engineering facts
• ODST signatures
• ODST camera layout
• ODST weapon/IK evidence
• Per-title evidence policy

The code was written by Claude and Codex under the direction of a human modder who made the product and reverse-engineering decisions and performed the headset tests. No human reviewed every line. The project is licensed under the MIT License.

Inspired by HaloCEVR by LivingFray and ReclaimerVR by Nibre. Halo is a Microsoft trademark; this project is not affiliated with Microsoft or Halo Studios.