pancreations/halo-mcc-vr

Halo MCC VR is a mod that adds virtual reality support to Halo 3 inside Halo: The Master Chief Collection on Steam. It works with headsets like PSVR2, HTC, and Quest through a standard called OpenXR, and adds features such as true stereo vision, head tracking, controller aiming, a floating in game reticle, and articulated virtual reality arms that follow your controller movements. A notable detail is that every line of code in this project was written by AI coding assistants, specifically Claude and Codex, directed by a modder who does not write code themselves. The human made the decisions about how to reverse engineer the game and tested every result in a headset, while the AI produced the C++ code. The README states this plainly so users understand no human reviewed each line of code, and recommends reading the source before running it. Installing the mod is simple: you copy two files into a new folder inside your existing MCC install, then run a launcher program. There is no installer script. Settings are stored in a configuration file that can be edited by hand or through an in game menu. The README also lists specific MCC video settings, like frame rate and field of view, that must be set correctly or the game will visually break in the headset. The README warns that Windows or antivirus software may flag the mod's files as suspicious or quarantine them, and explains this is a common false alarm for VR mods because they load themselves into the running game. It suggests allowing the two flagged files rather than turning off antivirus protection entirely, and provides a fingerprint file to check downloads against. This is still a development build, not a finished release, and features like other Halo games, vehicles, and cutscenes are not yet fully working. It is licensed under MIT, meaning it can be used, modified, and shared freely.